Ultimate List of the Best Fiberglass-Free Latex and Memory Foam Mattresses in 2021


Last Updated on January 20, 2021

I contacted a bunch of the “Bed-in-a-Box” companies selling memory foam and latex mattresses on the web and through Amazon and asked them these questions:

Do any of your memory foam and/or latex mattresses contain Fiberglass, Modacrylic, Polyester, Rayon, or Silica in the covers or any other part of the mattress? What about Fire Retardant sprays like Antimony, are any of them used on your mattresses? What countries are your memory foam mattresses made in?

What I found regarding which Memory Foam Mattresses contain Fiberglass

Starting late September of 2019 I’ve been contacting memory foam mattress manufacturers. Most replies came in a day or two, some take up to 5 days, and a few don’t even bother to respond. Blank rows in the table below denote a memory foam mattress manufacturer that ignored me and didn’t respond to my questions.

Click column headers to sort columns – Manufacturer column contains affiliate links that may earn me a commission.

Manufacturer Fiberglass? Modacrylic / Silica / Rayon / Polyester FR Chemical Spray? Countries of Origin
Amerisleep No Rayon No USA
AmazonBasics n/a n/a n/a Various – China, Malaysia, etc
American Bedding        
Best Price Mattress Yes Silica No China, Serbia, South Korea, Spain, Thailand, Vietnam
Brentwood Home No Silica (hydrated) No USA
Casper Sleep No Silica (woven) No USA, Canada, or Europe.
Classic Brands        
Dreamfoam Bedding No Silica (non-woven), Rayon, Polyester No USA
Early Bird        
Eco Terra No No No Sri-Lanka, USA
Idle Sleep        
Linenspa Some No Yes  
LUCID Some Unstated Some Unstated
Molblly Yes Unstated Unstated China
Nectar Yes Polyester, Rayon No China
Perfect Cloud        
Plush Beds        
Puffy No Polyester, Silica
Sealy Unstated Unstated Unstated USA
Signature Designs Unstated Unstated No Unstated
Signature Sleep Yes Silica (woven), Modacrylic Unstated China
Sleep On Latex No No No Malaysia
Sunrising Bedding No Polyester (Dacron)
No China, Malaysia
SweetNight No Unstated Unstated Malaysia
Tempur-Pedic Unstated Unstated Unstated Unstated
Tuft & Needle No Polyester No USA
Zinus Yes No No China, USA

Based on what I found the best Memory Foam Mattress brands that do NOT contain fiberglass are Amerisleep, Sunrising Bedding, and Tuft & Needle – but only if you are okay with Polyester or Rayon. The best fiberglass-free latex mattresses are Sleep On Latex and Eco Terra.

However, do not take my word as gold because people make mistakes and companies are known to lie! We have numerous examples in this article where companies said one thing but photos from Amazon reviews have shown the opposite. Always use due diligence and ask the mattress manufacturer for yourself and even demand to see a photo of the mattress label before ordering – if they can’t or won’t provide it, then perhaps they have something to hide.

To see more latex and memory foam mattress information and the actual responses to my questions made by Mattress manufacturers, see below.


AmazonBasics memory foam mattresses are made by various manufacturers so it would be hard to track down who made what, and even If I did it could change at any time. I would just play it safe and just always assume that an AmazonBasics memory foam mattress could contain fiberglass.


Amerisleep’s response:
“Not only does the foam in Amerisleep mattresses meet the Certi-PUR® standards, but we also use plant-based materials instead of petroleum to make our foam. On top of that, our patented manufacturing process is the only one that meets the standards of the Clean Air Act. To clarify, our memory foam mattresses do not contain fiberglass, modacrylic, or silica in our covers. In addition, our mattresses are manufactured in the U.S.! “

So far so good… I will look for evidence that states otherwise, and I’m following up about the use of Polyester/Rayon and Fire Retardant sprays!

Amerisleep’s Second response:
“We wrap each mattress in a Greenguard Fire Sock to serve as a flame retardant. It uses a rayon fiber material from natural cellulose. It does not contain harmful chemicals and will keep you safe and healthy at night. Reports link Chemical Fire Retardants with serious health risks. Some of them include birth defects, behavioral problems, and hormone disruptions.”

Best Price Mattress

Best Price Mattress’ response:
“Our memory foam mattresses contain a silica based fire sock that encases the foam inside the mattress. Our materials are globally sourced in countries such as Thailand, Spain, Serbia, Vietnam, China and South Korea.”

A bit shady – Best Price mattress dodged the fiberglass question and stated their memory foam mattresses only contain silica when I contacted them, however their Amazon reviews show they do indeed contain fiberglass. Also, their website says mattresses are “Designed in USA” but fails to mention that it could actually be constructed in Canada, Europe, or USA.

Brentwood Home

Brentwood Home’s response:
“Our memory foam mattresses are made right here in our factory in Fullerton, CA. They do not contain fiberglass in any part of the mattress and we use hydrated silica as a fire barrier. I have reached out to our product specialist team about modacrylic and as soon as I hear back I will get back to you.”

The response from Brentwood is pretty favorable since hydrated silica is generally regarded as safe. I’m still waiting to hear back about Modacrylic and the use of Fire Retardant sprays.

Brentwood Home’s second response:
“Upon speaking with our Product Specialist Team, they informed us that these fibers are used in toxic fire retardants. We do not use any chemical fire retardants. Our Cedar luxe uses wool to encase the mattress on all six sides and the rest of our mattresses use hydrated silica interwoven into the underside of the mattress ticking.”

Casper Sleep

Casper Sleep’s response:
“None of our mattresses contain any of the materials you listed in your question above, nor do our mattress covers. Our mattresses are designed in the USA… Due to how we function, many of our products are manufactured locally per the domain… We operate in Europe, Canada and America currently, so it’s dependent upon where you purchase our mattress to an extent.”

However, Casper Sleep’s website FAQ clearly states:
“The Casper mattresses do not contain any flame retardant chemicals. Our flame retardant is a proprietary woven silica sock that’s just under the cover. In the event of a fire, the sock melts on itself and suffocates the oxygen needed for the fire to burn.”

Dreamfoam Bedding

It appears that Dreamfoam Bedding is owned and/or operated by Brookyln Bedding because that’s who responded to me via email after using the contact form on Dreamfoam Bedding’s website.

Dreamfoam Beddings’s response:
“We do not use any chemical fire sprays or chemical retardants in our mattresses. Brooklyn Bedding only uses the highest quality fire-retardant socks, made of Non-Woven Silica/Rayon/Polyester/Cotton Blend. For more information regarding our fire retardant fibers, you can research Jones Fiber. Our mattresses are made here in the U.S. in Phoenix, Arizona.”

Eco Terra

While Eco Terra is technically a manufacturer of Latex mattresses and not memory foam I still decided to see what they had to say.

Eco Terra’s response:
“We source our latex in Sri-Lanka, but the mattress is assembled and handcrafted here in our warehouse in Camarillo, CA. The mattress does not contain any fiberglass, etc. It’s made of all natural latex, organic wool and cotton. We only use organic wool as natural fire barrier.”


Linenspa’s response:
“There are no harmful chemicals or fire retardants used in the manufacturing of the product. The only one with the fiberglass fire retardant and that is the 5″ gel memory foam mattress. The rest have a non removable cover… They are a treated cotton

I must note that lots of Amazon reviews for Linenspa beds have complaints about bedbugs arriving in the package..


LUCID’s response:
“Here is a list of mattresses that have a treated cotton fire-retardant cover instead of a fiberglass fire retardant:
5 inch Gel Infused Memory Foam, 6 inch Gel Infused Memory Foam, 8 inch Gel Infused Memory Foam, 10 inch Gel Infused Memory Foam, 10 Inch Plush Gel Infused Memory Foam”


Molblly’s response:
“The inner cover of our memory foam mattress contains fiberglass… In addition, we are a large mattress manufacturer in China and our mattresses are also made in our factory in China.”


Nectar’s First response:
“None at all… NECTAR does not contain any flame retardant chemicals. Rather a proprietary sock that’s just under the cover. In the event of a fire, the sock melts on itself and suffocates”

Amazon reviews contain photos off Nectar’s memory foam mattress tags showing Rayon and Polyester in the used materials.

Nectar’s Second response:
“The proprietary sock does contain fiberglass”

So who knows, really? Nectar says one thing, evidence proves otherwise, and then they change their story when confronted an apologize for “misinformation”. It would be safest to just avoid Nectar completely in my opinion.

Puffy Mattress

Puffy Mattress’ first response:
“Our mattresses are 100% made in the USA and are CertiPUR-US® certified. I have included two links below for more information on the construction of our mattresses and their materials.”

So in reality Puffy Mattress either avoided the question or they’ve hired lazy people to do support, because I had already been to the links provided and my question was not answered at all there which is why I emailed them in the first place… I’ve replied to their email, I guess we’ll see what happens!

Puffy Mattress’ second response:
“As we mentioned before, our mattresses are 100% CertiPUR-US certified. And you can check on the website all the materials that negate the certification, as well as what the foams have to go through to be certified. All the info that you need and asked bout is on their website: https://certipur.us/

So Puffy got back to me and basically gave me the “as I said before” treatment with the same copy/paste reply as the first response. This has pissed me off a bit so I’ve replied one last time to give them a chance to actually answer my questions before I write them off as a member of the Avoid-At-All-Costs mattress brands.

Puffy Mattress’ third response:
“Thank you for your reply. It is stated under our “How Its Made” webpage that we do not use flame retardants. The foam layers are encased in a firesock that is comprised of silica and wool threads. The mattress has a polyester cover that completely encloses and covers the firesock.”

So after THREE emails Puffy finally gave the answers to my questions – answers which are definitely not on their “How It’s Made” page like the representative seems to believe. 🙄😐


Sealy’s response:
“Sealy mattresses are designed and built in the U.S.A.”

Aside from revealing the country mattresses are manufactured in, Sealy dodged the other questions and didn’t reveal any info about Fiberglass use or Modacrylic/Silica/Rayon/Polyester.

Signature Designs (by Ashley)

Signature Sleep’s response:
“Ashley’s upholstered furniture is designed and labeled to comply with California’s TB 117-2013, and we are committed to designing our upholstered furniture with the goal of meeting the requirements of TB-117-2013 without the use of flame retardant chemicals. To that end, Ashley is pleased to announce that after working closely with our supply chain, upholstered furniture manufactured by or for us as of January 1, 2015 does not use flame retardant chemicals. In addition, all our upholstered furniture, no matter where it is shipped in the US, includes a label that complies with the requirements of California’s SB-1019”

Signature Designs by Ashley basically just dodged the questions and gave me the brochure copy/paste treatment. 🙄

Sleep on Latex

Sleep on Latex’s first response:
“We only sell latex mattresses that are made with 100% natural latex. There is no memory foam or synthetic latex added at all.
The liquid latex is harvested from rubber trees in Sri Lanka and the foam is made in and shipped from Malaysia.
Our latex does not contain fiberglass or any other similar materials in the cover or mattress. The cover is made with 100% organic cotton and 100% organic wool.”

Sleep on Latex seems to be a good choice! I have responded to their email and asked follow up questions just to make sure there are no fire-retardant sprays used, but seeing as wool is naturally fire retardant I think I already know that the answer will be “no”.

Sleep on Latex’s second response:
“Our mattress does not contain rayon, modacrylic, or silica. The cover has a zipper and the zipper tape is made of 100% polyester. Besides that, the cover fabric is 100% cotton and wool! We do not use any fire retardants. The wool in the mattress cover is enough to pass flammability tests.”

There you have it folks – no fire retardant sprays, rayon, and the only bit of polyester is the cover zipper which is why I’ve left the Sleep on Latex table entry as a “No” for polyester since most of the mattresses covered in this article probably have polyester zippers.

Signature Sleep

Signature Sleep’s response:
“Our Signature mattresses are manufactured in China… The FR barrier sock is made with a knitted process with 50% Modacrylic/50% Glass yarns (+/-10%). The Glass and Modacrylic yarns are used in the thread form on a small rolls and the final product is a kind of knitted (or woven) fabric.”

Signature Sleep was perhaps the most forthcoming of all the memory foam mattress manufacturers, they didn’t try to dodge questions and were the only manufacturer to give the amounts of Fiberglas and Modacrylic used based on percentages.

Sunrising Bedding

Sunrising Bedding’s response:
“We don’t have any fiberglass or chemical materials in the cover. Sunrising Bedding 8 inch and 10 inch mattress cover is made of pure Cashmere wool. Our mattress is manufactured in Malaysia.”

However, Sunrising Bedding’s website FAQ clearly states:
“The mattress is made in China. But it is CertiPUR-US certified that means it is made of safe materials and qualified for physical performance. We ensure it the same quality as U.S. mattresses.”


Sweetnight’s response:
“As far as manufacturing is concerned, most of our products are made in Malaysia. Also, our mattresses contain no fiberglass at all. We took it off once the study suggests this material might be a health threat.

Though the fiberglass material has been removed, our mattresses meet the requirements of 16 CFR Part 1633 (federal flammability (open flame) standard for the mattress sets) when used without a foundation, and meet the requirements of 16 CFR Part 1632 (Char length ≤ 2 inch in any direction of any cigarette). 
Meanwhile, our foam mattresses have undergone a rigorous certification by Certi-PUR US to be free from all harmful chemicals, carcinogens, PBDEs, heavy metal, phthalates, and formaldehyde. “

It’s good that Sweetnight removed fiberglass from their memory foam mattresses, however they still avoided answering the part of the question about Modacrylic, Rayon, Polyester, and FR Sprays like Antimony. I replied with follow up questions to get more information and will update when I get a response!


Tempur-Pedic completely dodged the questions and replied to me with a cookie cutter cut-n-paste reply that revealed no information about the country of origin nor materials used in their memory foam mattress manufacturing processes. They basically said it’s all a proprietary secret and that it’s legal and safe according to state and federal regulations.

Tuft & Needle

Tuft & Needle’s response:
“We manufacture our mattresses here in the US and do not use fiberglass, modacrylic, or silica in any components of our Original T&N or Mint mattress models… Our firesock is actually crafted with a polyester/cotton blend knit fabric, treated with a food grade salt.”


Zinus’ response:
“All our mattresses contain glass fiber.”

Regarding where Zinus mattress are made their website states:
“Right now, our product designers are based in South Korea and our manufacturing factories are in Xiamen, China.”

Popular brands from Amazon that were skipped due to not having a website are: Olee Sleep, PrimaSleep, Ssecretland, Vesgantti, Vibe, and YiiYYaa. Nightsbridge by Corsicana was skipped because they’re not sold on Amazon like Corsicana’s other brands.

Amazon Affiliate Disclosure – J. Snow Creations is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.



79 thoughts on “Ultimate List of the Best Fiberglass-Free Latex and Memory Foam Mattresses in 2021”

      1. Thank you so much for your helpful article! It’s there a way I can contact you with screenshots of a conversation with Lucid that proves there use of fiberglass? Your information you put on Lucid needs to be updated. Lucid’s reply was appalling.


        1. I’m not surprised seeing as LUCID told me that almost all of their mattresses have fiberglass except a few of their gel infused mattresses, which I have them listed as “some” on the fiberglass column of the table – but yes, by all means email me at john@jsnowcreations.com so I can see what they had to say!

          1. Hi,

            Do you know if Milliard 6” Tri fold mattresses have Fiberglass? I have the full sized & twin sized ones

    1. You are correct regarding Nectar using Polyester and Rayon, I have updated the article/table. Thank you! However, although I’m not surprised at Nectar for neglecting to tell me about the Polyester/Rayon on their website’s chat feature, either through deception or ignorance – I highly doubt they’d use fiberglass without listing it on the mattress tags like some of the Amazon reviews are eluding to. That would be a lawsuit waiting to happen. I did notice some of the materials listed on the tags say “polyester fiber” which is not technically fiberglass but would still sparkle as if it were though.

      Also, you are correct there is Dacron inside the Sunrising Bedding mattresses, which is a form of Polyester.


          1. Hi, John, is Sunrise Bedding still fiberglass free? I see you mention it has Dacron but previously cashmere wool. Here I see they say it’s made of high density fiber and someone says they are lying: https://amzn.to/3AZJmYd

      1. I have a nectar mattress and the sock does contain glass fibers. The sock has disintegrated on the side that my significant other sleeps on. We have tiny .5 inch fibers every where. We contacted nectar for a replacement and are still waiting.

        1. You’re absolutely correct and I’ve fixed the article. Nectar sales tactic training includes lying, apparently.

          Here’s my first conversation with them over chat:

          John: : Hello
          John: : Do any of your memory foam mattresses contain fiberglass in the covers or any part of the mattress?
          Orlando H.: : No sir they do not.
          Orlando H.: : Cotton and Tencel Cooling Cover Quilted Gel Memory Foam High core gel memory foam from vegetable based polyurethane Dust Mite Protection – Specially designed materials mean you’ll never have dust mites NECTAR does not contain any flame retardant chemicals. Rather a proprietary sock that’s just under the cover. In the event of a fire, the sock melts on itself and suffocates the oxygen needed for the fire to burn out.
          John: : So there’s no Modacrylic or any other form or wording for fiberglass such as “silica”?
          Orlando H.: : No sir none at all

          and here is our latest conversation:

          John: : I contacted Nectar once before and asked if Nectar mattresses contain fiberglass or fire retardant chemicals and this was the response: “None at all… NECTAR does not contain any flame retardant chemicals. Rather a proprietary sock that’s just under the cover. In the event of a fire, the sock melts on itself and suffocates”
          John: : so can you tell me if Nectar memory foam mattresses contain fiberglass or silica?
          Brenda Q: : Let me look into your chat history. One moment please
          Brenda Q: : Thanks for your patience, John. I apologize for the misinformation. Our Fire retardant is a proprietary sock that contains fiberglass; however, it’s not the harmful type that most think of. This sock looks and acts just like fabric.
          John: : well thats funny
          John: : because Orlando H said there was no fiberglass
          Brenda Q: : Again, I apologize for the misinformation
          John: : and my friend’s Nectar bed is shedding fiberglass particles all over her house
          Brenda Q: : The proprietary sock does contain fiberglass
          John: : thank you
          Brenda Q: : You’re welcome
          Brenda Q: : May i assist with any further questions
          John: : no that will be all
          John: : thanks for your help
          Brenda Q: : You’re welcome.
          Brenda Q: : thanks for shopping with Nectar. Have a great night1

          That really pisses me off.

  1. This is very helpful research. Regarding Best Price mattresses, someone posted on Amazon a photo purportedly of a Best Price mattress tag that lists fiberglass. The poster wrote a long post about how he/she became physically sick because of this. I’ll post link to it. Other mattress buyers posted similar complaints in reviews and Q&As on that page. On this link, scroll way down to customer photos. I’m looking for low-price mattress and this scares the heck out of me.


  2. I’m wondering why you failed to mention Indigo Sleep? Their mattresses are environmentally friendly! You can literally take apart their mattresses and flip the comfort layer! When this part wears out you simply buy a replacement of the comfort layer instead of a whole new bed! I can say their older model from 2018 did not have fiberglass in any form. They used the material used in firemans clothing. So sadly since they are a startup they had to change this or go out of business. They will happily explain their process. Which covers the fiberglass with other material and makes it much safer. It seems most people worry more about cost than safety. They do go the extra mile and use an expensive process to make sure it’s as safe as can be! They also have a 100 night sleep trial. I highly recommend them. On a last note, even though the cover is actually removable which is astounding, do not attempt to wash it in the machine. Pretty sure it would cause serious damage. One last thought the fire safety standards are pretty crazy a blow torch has to be held to the mattress for a certain amount of time, I believe close to 2 minutes without it catching fire. Pretty extreme. I do think this bed with its safer method of continuous filament fiberglass yarn, is a really good deal! Queen mattress ready to sleep on after unboxing is $499! They even have a model where each side of the bed has it’s own comfort layer, perfect for couples with different sleep needs! I do not work for Indigo Sleep, I simply love how hard and passionate they are about a great product!

    1. I chose my brands to cover in this article simply by searching “memory foam mattress” on Amazon and then writing down all the brands that showed up on the first 3 pages or so, there must have not been a listing for Indigo Sleep when I did that! I will be updating the article with new memory foam mattress manufacturers and information so I’ll add Indigo Sleep when I do! Thank you!

  3. John-I was just on Amazon, memory foam mattresses, and read reviews…in particular the LUCID brand.
    OH DEAR! Some people are experiencing horrible HEALTH issues after removing the cover.
    Fiberglass particles flying through the air, under the bed, causing itching, BREATHING it,
    gets in your clothes, affecting a child’s health, can’t get rid of fibers after MULTIPLE WASHINGS AND CLEANING THE ENTIRE HOUSE. HORRIBLE!!!

    1. Yes, it is terrible! There are some people that have actually had to move out of their homes because the fiberglass had gotten all into the ventilation systems and couldn’t be cleaned… You can also watch some videos on youtube of people who are dealit with the ramifications of removing the inner cover on their memory foam mattresses. Some of these people didn’t even remove their mattresses’ inner cover on purpose – instead there was a hole created by wear or by accident/kids/pets. Very bad, and very sad..

        1. I went with a Tuft & Needle for my own bed first but then I also replaced my guest bedroom mattress with a Sunrise Bedding mattress and I’m happy with both! A family member of mine went with a Zinus hybrid coil/foam mattress that was fiberglass-free and it’s actually pretty decent as well, I was impressed with it for the price.

          1. Which Zinus hybrid was fiberglass-free? I have two ultra comfort and one green tea mattress from Zinus, and I have never removed the fire retardant sock, but I did look and can see clear thin fibers sticking through the outer cover on the bottom of the mattresses when inspecting with a bright light held at an angle. Some of these seem to have fallen out onto the trundle bed below, which tells me they don’t stay put even if you don’t remove the cover. So now I’m looking for replacements, considering Serta SleepToGo from Sam’s club but I can’t find information about what they use in the fireblocker. I’d consider the Zinus again if it was fiberglass-free.

          2. I can not find my copies of the conversation I had with Zinus and I can’t exactly remember if it was in the conversations with them or if the info was from researching on Amazon and Google – but I seem to remember Zinus traditional coil mattresses being fiberglass-free as well as their Gel Hybrid Mattresses. I would definitely ask Zinus directly to be sure before ordering, however.

            Sorry I couldn’t be more help.

          3. I thought all Zinus mattresses have fiberglass. Please let me know which one they went with that doesn’t contain it. Thank you!

  4. I don’t see additional comments below the chart regarding Signature Designs. Also is Signature Designs related to Ashley Signature Designs?

    1. You’re right, the response from Signature Designs seems to have slipped through the cracks and didn’t get added to the article! And yes, it is Signature Designs by Ashley. I will add their response to the article now!

      The bad news is that they basically dodged the questions and gave me a cookie-cutter response obviously copy and pasted.

  5. This is a great article and very helpful. I’m confused as to why Dreamfoam has fiberglass, what am I missing?

  6. Hi there 🙂
    I need some advice and keep returning to this page- maybe you can help. I spent so long trying to find a fiberglass-free memory foam mattress in my price range. Long story short, I bought a Sleepy’s Doze Plush memory foam mattress from mattress firm. In store, I asked if it contained fiber-glass and the employee was unsure but concluded that it didn’t. The tag only states that the outer cover is made of polyester. It doesn’t mention the inner cover at all- which is weird. It says not to take the outer cover off and Mattress Firm claims that’s because it’ll void the warranty. Anyways, I am so paranoid now that the inner cover is fiberglass and my cat could potentially get a wild hair up his butt to claw my bed (a daily task) and there will be fiberglass everywhere. I unzipped the cover a little to try and see if I could see any fiberglass but I can’t tell. It’s just a stretchy netted cover and it does glisten in the light but doesn’t look like there is glass. The employees in store and on the customer service line say they’re “pretty sure” it doesn’t contain fiberglass but that’s not good enough for me. Any advice? I took pictures of the inner cover too- maybe I can email them to you.

    1. Sorry for the late reply, I had taken some time away with the onset of the Coronovirus and the quarantine.

      My advice for you and anyone else buying a mattress in person is to request the MSDS sheet for the mattress. The Material Safety Data Sheet will list any and all chemicals used in the mattress and it’s cover including any silica, modacrylic, fiberglass, fire-retardant chemicals, as well as the actual fibers/cloth that the mattress is made from. If a store like Mattress Firm cannot provide the MSDS, then they aren’t really serious about safety or health concerns. I’d be suspicious of Mattress Firm not readily showing you the MSDS because they definitely have it – how do I know? If you go to https://www.sleepys.com/ and look at the bottom, the website says ” Copyright 2018 by MattressFirm.com, a Mattress Firm, Inc. Company” which means they own Sleepy’s, it’s their store brand, they know exactly what materials are used to make the mattresses.

  7. You asked about modacrylic, or silica as well as Fiberglass; Casper uses “proprietary woven silica sock.” Is their silica potentially fiberglass?

    1. Yes and no. Fiberglass (and regular glass, for that matter) is technically made from silica (which is a naturally occurring substance found in quarts, sand, etc), however, fiberglass is manufactured with about 2/3 silica content and another 1/3 of other plastics and other contents that are formed into loose fiber-like shards.

      Silica, as opposed to fiberglass, is usually almost pure silica and it is either woven like a polyester type fabric or non-woven and bonded into sheets in a haphazard manner like felt or the dust cover found on the bottom of most sofas, chairs, and box springs.

      So, in this article I refer to fiberglass as loose glass-like fibers that are not contained in a woven or non-woven fabric but instead just contained loosely in a pocket/sleeve/sock – like the Zinus mattresses that have an inner cover and an outer cover with a bunch of loose fiberglass shards just floating around between the two covers. Silica would be fabrics or padding, not loose shards.

      I hope that clears things up, and sorry for the late reply. I took a few weeks off when the Corona Virus stuff started getting crazy in my area.

  8. Trying to do a bit a research and it looks like Tuft and Needle replied to an Amazon question with this:
    “Q: Does the fire barrier contain glass fibers?
    I am replacing two of our mattresses, partially because they are shedding glass fibers from the liner.
    A: Hi Kayla, thanks for reaching out! Rather than using a chemical flame retardant, T&N’s fire sock is woven from several fibers that make it inherently flame retardant. The fibers (modacrylic, continuous glass filament, rayon, and nylon) each serve a different purpose and combine to create it’s flame resistance. The fire sock, like the mattress itself, is covered under our honest 10 year warranty. It’s built to last and shouldn’t break down early, but we’d want you to reach out if you have any concerns so we can help.
    By Tuft & Needle on August 28, 2017”

    So needless to say I was a little disappointed to find they in fact DO use fiberglass. Unless of course they have changed their mattresses since 2017, which is possible.


    1. Yes, I would say that the 2017 answer no longer applies since I asked them in 2019 and they assured me that their Original T&N and Mint mattress models do not contain fiberglass, modacrylic, or silica, and that their fire retardant sock is polyester/cotton fabric treated with salt. Feel free to reach out to them and ask again, or even about a specific model of mattress – it couldn’t hurt!

  9. Can you check Olee Sleep mattresses or Tulo mattresses to see if they have fiberglass? I bought my daughter an Olee last year. My son has a Best Price Mattress Foam Topper and now I am terrified that its made with fiberglass? The box came with a Certi-Pur US certificate so I though it was safe,

  10. Hi, PLEASE do an investigation into Nectar. I ordered a mattress from them and it has a tag that is labeled Classic Brands.
    After pressing a salesman on it, he admitted that Classic Brands manufactures Nectar mattresses. So I am not sure how Nectar can claim there is no fiberglass.

    1. I will definitely look into the connection between Nectar and Classic Brands mattresses. Was the Nectar mattress ordered from a reputable seller that wouldn’t sell counterfeits or use “bait and switch” sales tactics?

      And what about the Classic Brands mattress’ tag – I’m curious, does it indeed say it contains fiberglass??

      I look forward to hearing back!

  11. My son wants a 12″ memory foam twin size mattress without Fiber glass, Modacrylic or Silica. He is also allergic to latex but I did not find any information on memory foam mattresses with or without latex. Do you know what mattresses contain latex? How do I research that? Thank you. Betty

  12. Thanks for this great article John. Would it be possible to add LEESA to your list? It seems they are favorites for Wirecutter and Buiness Insider. They also tow the “Luxury” line. Very curious to see how good they are…

    Many thanks for the work!

  13. Hey John! Great little bit of research. Anything on whats inside the Leesa bed? They too have the sock but not too much information on it. Thanks!

  14. Bless your soul for making this.
    I was trying to look for mattresses on Amazon, and was getting frustrated that I couldn’t filter the fiberglass containing ones.
    Thanks so much 🙂

  15. I need to buy 8” twin mattresses for a bunk bed and would like to not have fiberglass in them. What are your suggestions for reasonably priced mattress that a 3 yr old and 5 yr old can use occasionally?

    1. Honestly, because so many of these companies are shady about the materials in their beds I would only consider Tuft & Needle or SunRise Bedding for fiberglass-free memory foam. However, there are many more options if you switch to Latex from memory foam, and regular coil mattresses usually don’t have fiberglass since they aren’t as flammable as memory foam – you still have to watch out for harmful fire retardant chemical sprays with latex and coil mattresses but some companies use just organic wool to meet fire retardant regulations since wool is naturally fire retardant.

    1. Yes, I figured that’s why they ignored me. However, I refrained from adding second-hand info to this article and instead relied on answers directly from the mattress brands, their websites, and Amazon reviews with actual proof/photos. I didn’t want to blindly take info from other websites/articles and risk posting unverified misinformation.

  16. John, clicked your link to Eco terra & began reading reviews. I opened a photo from a reviewer & there it was. 10% poly & 10% rayon in the cover. Thst is a direct contradiction to the info they provided you as well as to consumers. Why the shameful deception? Organic..blah, blah, blah…NOPE! Thought you’d want to know. Thank you so much for your in depth article. You could be the industry whistleblower. We consumers desperately need this info for the health of our families.
    Thank you,

    1. I did see that review, actually, but I noticed it was from 2017 and did some more digging around. The Eco Terra website actually states “No Urethane” and has an updated photo of their mattress tag materials list and it is:

      73% Latex, 21% Wool, 6% Cotton

      So I’d say they heard the complaints and concerns of their customers and changed their materials to truly be healthy! I will contact them and ask just to be sure though.

      Also, thanks you for the words of encouragement – I truly appreciate it! 😊

    1. I completely agree, they told me specifically that only their 5″, 6″, 8″, 10″, and 10″ Inch Plush Gel Infused Memory Foam are fiber-glass free but instead of fire retardant chemicals sprayed on them.

  17. I bought an 8″ Zinus memory foam mattress and cut it to fit into my Honda Fit. I cut the mattress outside and didn’t have any problems with the fibreglass. Zipped open the cover, took it off, cut the sock on the end, cut the mattress, loosely put the sock back over the end and zipped it all back up.

  18. Thanks John this is helpful. It’s like a second job researching mattresses. Has anyone had any experience with “Sleep and Live” ?

  19. I just had a an online chat with an associate from Nectar, and they do, indeed, have fiberglass. The exact response was, “Yes, the FR barrier sock that surrounds the foam is almost 100% fiberglass”. Her next comment was, “But it’s not the nasty kind, like in insulation, if you beat it up and ground it down it might get bad, but under ordinary wear and tear it’s completely harmless”.

  20. Thank you for all of your research on this! Super impressed. I sound so ignorant, but I had no idea fiberglass was used in so many mattresses until I started searching for a mattress for my son and read some horrifying reviews. Thanks for pointing me in the right direction.

  21. So your family member went with a Zinus? Even though they said all there mattresses are made with fiberglass? How can they be sure that the Zinus stating it’s fiberglass free is legit?
    Oh I’m kinda scared and glad I saw this article.
    A few months ago I was ready to buy a Zinus but decided we could get a few more months out of our current matress. Thank God we waited.
    I hope the house we just got an accepted offer to buy doesn’t have the problem that was mentioned where there is fiberglass that came out of mattress that is impossible to get rid of. Oh boy, so much to worry about.
    Well thank you for this awesome informative article. I’m so glad I seen it.

  22. Hi, I think you should update this. I just chatted with someone in Nectar and they straight up told me their mattresses are almost 100% fiberglass.

    1. Yeah I’m not surprised, “economy” lines are usually worse quality. According to Tuft & Needle only their Original and Mint liens of memory foam mattresses are fiberglass/silica/modacrylic free, so the other lines T&N mattress lines do.

  23. Thank you so much for the information. I am looking to buy a new mattress. I now know what I won’t be buying.

    1. I don’t have a Sam’s Club membership so I can’t view that page. What exactly does it say? The info might be outdated, or it’s a Tuft & Needle mattress from a line other than their Original or Mint lines which are the only mattress lines Tuft & Needle said were fiberglass-free. Let me know!

  24. Hi there John,

    This website is amazing man. Bless you for this. I am trying to find out if the Serra SleepToGo 10 inch Gel/Memory foam from Sam’s has Fiberglass in their cover. Someone had asked it before but I can’t seem to figure out how to get to the archived questions and answers. Thanks for any help you can offer.

  25. Hey John,

    Thank you for compiling this information, it is definitely helpful when it comes to selecting a memory foam mattress. Have you heard of this manufacturer and whether their memory foam mattress contains fiberglass or chemicals? Thank you.


  26. Has anyone ever contacted Helix about their mattresses? My wife and I just purchased a Helix Midnight Luxe and i’m curious about this after reading your article and research on the topic. I’ve emailed Helix with the question and will report back.

    1. Reply from Helix:

      Hi David,

      Thanks for reaching out! ​To adhere to fire safety regulations, every Helix mattress has a fire retardant barrier. Rather than a chemical spray, we use a flame retardant sock that smothers flames – this prevents oxygen from feeding the fire and keeps the flames from spreading to the foam.

      The sock is made of a silica-based fabric, the fire-retardant materials are inert until the sock catches fire.

      Standard models have an FR-inherent fabric that has fiberglass. Our FR-inherent fabric is sourced and made in the US where the fiberglass core is enclosed with polyester fibers. This means that there are zero risks that your skin would ever get in contact with fiberglass. All of our fabrics are still OEKO-TEX certified.

      The Luxe and Helix Plus do not have any fiberglass in the FR (flame retardant) yarns, in both the top and border parts of the mattress. For both models, the FR yarn that is used is an FR Rayon, a derivative of cellulose (bamboo fiber).

      Our mattresses are made in the US. Let us know if you have further questions!

      Jessica, Comfort Specialist

  27. I am still recovering from a Zinus Mattress fiberglass explosion. Tip: Tape Lint Rollers or Duct Tape capture the shards without spreading to other areas. Anyway, after the trauma I am looking for the cleanest mattress. I really like the details and online reputation of Sleep on Latex, but the mattress is very heavy (120lbs for Queen). The Sleep on Latex website even confirms that it is safe to remove the cover, which is more transparent than the other mattress companies. So before I buy something that I will never be able to lift on my own. Do you agree that Sleep on Latex is super safe enough to justify the weight and price? Or do you feel like any of the other verified mattress are equally as 100% fiberglass (silica, etc.)free? Do the polyester fire socs also have a fiberglass like texture (meaning complete explosion disaster waiting to happen)? I appreciate any info or advice that you have. Thanks for your time.

    Possible update for your site: According to the Avocado Green Mattress website, they claim to have recently removed fiberglass liners from their mattresses.

    1. Latex is just as flammable as memory foam so meeting fire safety regulations is just as hard for latex mattresses as it is memory foam – however, it seems the main reason for manufacturers making latex mattress in the first place is the marketability of latex because it is natural and can be organic while memory foam is purely synthetic and definitely not organic. With that in mind it would make sense that more latex mattress makers would use wool and/or salt as their means of fire retardation as opposed to chemicals or fiberglass which would diminish their marketability as natural, organic, and “safe”.

      Regarding the polyester firesock, for both latex and memory foam mattresses, it is always a woven fiber cloth and not loose strands like fiberglass – you don’t have to worry about the polyester getting everywhere, it’s just not preferred because it’s a skin/eye/lung irritant to some people as well as being basically non-biodegradable.

      I’m 6’5″ and weigh 280lbs and moving a dead-weight 120lb mattress does not sound fun at all! But.. if I’d gone through a Zinus fiberglass invasion like you then I’d probably have no hesitation buying a heavy latex mattress, especially from Sleep On Latex because of their reputation and how forthcoming with details they were when I asked them.

      My one suggestion would be a heavy duty bed frame that doesn’t require a box spring like the one here – https://amzn.to/38c0cpL – The Heavy-Duty bed frame is much sturdier than a box-spring which can have wood inside bow and snap when over a regular bed frame that just has supports on the side. I used to have a box spring that bowed so badly that if you set it on the floor it would rock side to side like a rocking chair! I’m so glad I upgraded, and the extra storage space under the beds is nice too!

      Zinus and other brands sell similar bed frames – https://amzn.to/3sPsOgp – but if you look closely you’ll notice they have a frame of bars but most of the support is on thick gauge wires (sort of like cattle fencing) and those wires do bend a bit. My daughter has a Zinus bed frame under her hybrid mattress and the wires are slightly bowed just from me laying with her at night to read bedtime stories. I don’t actually feel any difference, but I feel like the tack welds might break eventually.

  28. Hi John, As far as the Brentwood mattress is the hydrated silica that is used considered dangerous? Thank you so much for such useful information. You have been such a big help in trying to choose a safe mattress.

  29. Could you go into a little more detail about the relative safety of woven silica socks such as in Purple or Casper vs fiberglass? It’s very hard to find information on.

  30. Hello! Thanks for compiling this information. I currently have a Leesa foam mattress and was worried about its materials. I reached out to their customer service asking what materials were used in their fire retardant sock (since their webpage only says it is proprietary and meets whatever manufacturing standards). They actually gave an answer without dodging the question (though I realize now I didnt ask specifically about fiberglass; I was afraid if I did they wouldn’t give a real answer). “It is a proprietary blend consisting of rayon, silica, cotton and modacrylic.” Does modacrylic mean fiberglass? From a google image search I couldnt determine if it was more commonly a woven fiber or cut fiberglass pieces. Thanks!

  31. John:
    You have done an amazing job of cutting through all the deceiption of some of these mattress companies. I have been on a “journey” for several weeks, now, getting more and more confused about which mattress to buy. Unfortunately, I did buy a Zinus for our son and daughter-in-law for their spare room. In reading the “fixes”, I found that possibly a good mattress cover would help and to never take the orginal cover off. Hope that is true. Fortunately the bed is not used too often or for long stays.
    With that said we are still on the hunt for a new mattress for our own home. I am interested to know if you found anything on the Layla Copper Infused Memory Foam Mattress/10″/Natural cooling technology/thermal gel/flippable between firm & med soft comfort/ fits all sleeper types. Also I am wondering about the Pure Green Organic Latex mattress. And, the Casper Sleep Nova foam mattress, I am guessing has the woven silica. You are saying that is not really a bad thing?
    Thank you for any information you can provide. You are doing us all a tremendous service!

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