How to Tell If Your Mattress Has Fiberglass, and What to Do If It Does

If you found this page because of the recent Nectar or Zinus headlines and you're wondering whether your own mattress is part of the problem, here's the short version before the long one.

If the mattress arrived today and the smell is what brought you here rather than the cover, the four-step plan for a new mattress is the faster read.

How to check the mattress you already own

Can you tell by looking?

No, and that is the whole problem. The fiberglass sits in a sleeve underneath the outer cover, so a mattress that contains it and one that does not look the same once you have the bedding off. Wagner et al. (2022) checked exactly this: on four newly purchased mattresses, two of which had fiberglass socks inside, they found none of it on the outer surfaces. Peer-reviewed

Inside the cover was a different story. Up to 1% of the fiberglass had already migrated out of the sock and into the fabric layers next to it, on mattresses that were brand new and had never been opened. That is the reason the advice is not to unzip: the material has already moved to where the zip would release it. Peer-reviewed

People do report seeing it, and they are not imagining things. What they are seeing is fiberglass that has already got out: fine strands on the sheets, on the carpet, catching the light at a low angle. By the time it is visible the sleeve has been opened, and looking is no longer the useful question. What to do next is.

So the check is not a visual one. It is the tag.

Every mattress sold in the US and Canada is required by law to carry a tag sewn into the side seam that lists every material inside by percentage. It's called a law tag — the mattress's nutrition label.

Find it. Pull the bedding back. The tag is usually on one of the long sides near a corner, about the size of an index card. Read the fill list. You're looking for one of these:

• "Glass fiber" or "fiberglass" — your mattress contains fiberglass. The tag gives a percentage of the total fill, which is small, but that is not the number that matters. Wagner et al. (2022) took four mattresses apart and found the inner sock layer of two of them was over 50% fiberglass by mass, one at roughly 50% and one at roughly 75%. The barrier itself is mostly glass. Peer-reviewed
• "Silica" on its own — ambiguous, and not automatically fiberglass. The industry survey California requires lists fiberglass fiber and silica-embedded rayon fiber as separate materials, and the rayon one is far more common: 58.1% of interior barriers against 8.6% for fiberglass. Silica-embedded rayon is a cellulose fibre, not spun glass. If the tag says only "silica" with nothing else, ask the manufacturer in writing which one it is. Industry
• "Wool," "rayon," "viscose rayon," "modacrylic," or "aramid" — non-fiberglass fire barriers. You're fine on this front.
• Tag missing, faded, or unreadable — assume it might contain fiberglass and don't unzip the cover. Check the manufacturer's website or contact customer service.

If you can't find the tag, look up the brand and model online. Most manufacturers publish their material specs. If they don't, email customer support and ask in writing: "What is the fire barrier material in [model name]? Does it contain fiberglass or glass fiber?" Save the response. The brands that won't answer plainly are giving you information by their silence.

How to find a fiberglass-free mattress

If you're shopping for a new mattress and want to avoid this situation, fiberglass-free mattresses are easier to find than they used to be — and you don't have to spend $4,000 to get one. The challenge is that brands using fiberglass don't advertise it, so you have to know how to look.

The simple test. Before you buy anything, find the full materials list on the manufacturer's website. Search for the words fire barrier, fire sock, flame barrier, or flame retardant. If the description names a specific non-fiberglass material — wool, viscose rayon, modacrylic, aramid — you're fine. If it says "non-toxic fire barrier" or "proprietary blend" without specifics, that's a yellow flag: follow up in writing before you buy.

The certifications that prohibit fiberglass. None of these certifications allow fiberglass in their certified products:

• GOTS (Global Organic Textile Standard) — for cotton and wool components.
• GOLS (Global Organic Latex Standard) — for latex.
• MADE SAFE — broader chemistry-safety certification covering the full mattress.

Note that GreenGuard Gold is a strong emissions certification but doesn't specifically prohibit fiberglass. CertiPUR-US is foam-only and tells you nothing about the fire barrier — a CertiPUR-US-certified mattress can absolutely contain fiberglass underneath the foam it certifies. We wrote a whole piece on what CertiPUR-US actually tests for.

Fiberglass-free mattress brands with documented disclosure

These brands publish their full material composition publicly and confirm in their product specifications that their mattresses do not contain fiberglass. We don't take affiliate commissions from any of these brands — the list is based on documented disclosure, not paid placement.

One thing not to do. Don't trust a third-party "best non-toxic mattress" article that links to brands through affiliate codes. The financial incentive in those rankings doesn't match the disclosure they claim to be doing. Read the manufacturer's own product page and the law tag.

Price reality check

True natural-rubber-and-wool builds run $1,800–$4,000+. Affordable certified-organic options start around $800–$1,200. Below about $400 for a queen, fiberglass becomes very likely because no other fire barrier material is economical at that price point. The federal flammability standard at 16 CFR Part 1633 doesn't specify how a mattress has to achieve flame resistance, and at the lowest price tier, fiberglass is what the math allows. Peer-reviewed

This is not a moral judgment. It's the reality of what the federal flammability standard costs to meet. If $400 is your ceiling, the legitimate options are: accept a fiberglass mattress and never unzip the cover, buy used from a seller who can confirm what's inside, or wait and save until you can move up a tier.

Here is something you learn selling mattresses: the horror stories run through removable covers, and removable covers live almost entirely on all-foam beds. A mattress built on coils — innerspring, hybrid — nearly always has a sewn, non-removable cover. No zipper, no "unzip to wash" instruction, no moment where anyone opens the sleeve. Check the law tag either way. But if your budget mattress has springs in it, the pathway that produced the Nectar and Zinus cases mostly is not built into it.

What to do if your mattress does contain fiberglass

Take a breath. A fiberglass-containing mattress with the outer cover intact is not actively releasing fiberglass into your home. The fire sleeve is engineered to stay enclosed. The horror stories all start the same way: someone unzipped the cover.

• Leave the outer zipper cover on. Permanently. Don't unzip to wash. Don't let a cleaning service unzip. Whatever the care instructions say about removing the cover for laundering — ignore them. The cover is the only thing keeping the fiberglass inside.
• For spills, blot from the outside. Damp cloth on the surface of the cover. If the spill is deep enough that you'd need to get underneath, the mattress probably needs replacing rather than salvaging.
• Use a separate, washable mattress protector on top. This is the right way to keep a fiberglass mattress clean. Don't disturb the cover — protect it from above with something you can take off and wash. A good waterproof protector runs $30–$80.
• When you eventually replace the mattress, dispose of it carefully. Don't cut it open. Many cities have mattress recycling programs that handle this properly. If you have to put it out for trash, wrap it in plastic sheeting and tape the seams.

If you sleep on it every night with the cover undisturbed, the practical risk based on what's currently known is low. Almost every documented incident involves cover removal, not normal use.

What to do if you've already removed the cover

This is the worst-case scenario. If you unzipped a cover, exposed a fiberglass sleeve, and there are tiny shiny fibers on your skin or bedding or the floor — here's what to do, in order.

• Don't use a regular vacuum. Standard vacuums redistribute fiberglass through the home and often blow fibers out the exhaust. You need a HEPA-filtered vacuum.
• Don't dry-sweep with a broom. Sweeping aerosolizes the fibers. Use a damp microfiber mop on hard floors and HEPA-vacuum carpets and upholstery instead.
• Wear long sleeves, long pants, gloves, an N95 or P100 respirator, and eye protection while you clean. This is what NIOSH recommends for fiberglass cleanup. The cleanup is genuinely irritating to skin and lungs without protection.
• Bag the affected mattress and bedding in heavy plastic. Don't move anything through the house uncovered. A sleeve that's been disturbed will keep shedding fibers. The mattress itself usually can't be salvaged at this point.
• For severe contamination, hire professional remediation. Several companies now specialize in fiberglass-from-mattress cleanup. If you're documenting the situation for a potential class action claim, photograph everything before cleanup begins.
• Talk to a doctor if you have symptoms. Itching, eye irritation, sore throat, and short-term coughing are documented in the ATSDR toxicological profile and usually resolve once exposure ends.

If you think you have a case worth joining, the active Nectar litigation summary lists plaintiff law firm contacts. We are not lawyers and cannot give legal advice. Documenting everything early is what makes claims provable later.

What the lawsuits actually allege

Nectar (April 2026, ongoing). A proposed class action against Resident Home LLC, Nectar's parent company. It names four models (Classic, Premier, Luxe, Ultra) and the ClassAction.org case summary lays out the allegations: the mattresses contain woven fiberglass fire sleeves, the law tag says "Glass Fiber 23%," and consumers encouraged by Nectar's product materials to remove the cover for cleaning did so, exposing the fiberglass and contaminating their homes. The law tag had the information, but the marketing and product instructions didn't warn plainly about either the fiberglass or the risk of cover removal.

Zinus (2022, settled August 2023). A similar class action made comparable allegations across a broader range of Zinus mattresses. It was dismissed without prejudice after a private settlement. Terms aren't public. Plaintiff attorneys reported representing over 2,000 individuals with claimed injuries.

A class action complaint is not a finding of fact — it's an allegation. What is not contested in any of these cases is the underlying material: fiberglass is in the mattresses; the fight is about disclosure and the resulting harms.

Why fiberglass is in mattresses to begin with

Every mattress sold in the United States must pass a federal flammability test codified at 16 CFR Part 1633, in effect since 2007. The standard doesn't specify how a mattress has to achieve flame resistance. Manufacturers have three real options:

• Chemical flame retardants. Brominated and chlorinated compounds applied to foam or fabric. Effective. Cheap. Several have been linked to documented health concerns — and contribute to how foam off-gasses over time and to the question of whether memory foam is toxic.
• Naturally flame-resistant fibers. Wool, viscose rayon, modacrylic. Effective. More expensive. The default in higher-priced certified-organic mattresses.
• Woven fiberglass. A fire sleeve made of glass fibers. Effective. Cheapest of the three.

Fiberglass is widespread in the under-$400 mattress tier and present in many older mattresses still in use. California has decided to remove this option: AB 1059 bans the sale of mattresses containing textile fiberglass, effective January 1, 2027. New York has introduced a similar bill. The federal CPSC has not announced anything similar.

What the science actually says

The fibers in mattress fire sleeves are technically called synthetic vitreous fibers. The CDC's Agency for Toxic Substances and Disease Registry maintains a public toxicological profile for these fibers. Here's what's actually established: Peer-reviewed

• Short-term exposure causes irritation. Skin itching, eye irritation, sore throat, and upper respiratory irritation are well-documented and reversible once exposure ends.
• Worker cohort studies are mixed. ATSDR notes that workers in factories making fiberglass for home insulation "showed no increased rates of lung problems," while some refractory ceramic fiber workers showed chest x-ray changes.
• The IARC reviewed the evidence in 2002 and put insulation glass wool, continuous glass filament, rock wool and slag wool in Group 3: not classifiable as to carcinogenicity in humans. It kept two categories in Group 2B, possibly carcinogenic — refractory ceramic fibres, and special-purpose glass fibres such as E-glass. Which category a mattress fire sock falls into is not something we have found stated in any source, so we do not claim it. Regulatory

In plain terms: working in a fiberglass factory at industrial concentrations is associated with respiratory irritation and possible lung function changes. The hazard of sleeping on a fiberglass mattress with the cover intact is not the same hazard.

The honest gap: there is no peer-reviewed study, that we can locate, of fiberglass exposure specifically from consumer mattress products in household settings. The occupational evidence is the closest available proxy. This is a real limitation in the science. Inferred

Fiberglass is the visible problem. The chemistry is the other one.

Fiberglass is the hazard that announces itself. You can see the splinter, you can clean the contamination, and the fix is concrete: leave the cover on, or buy a mattress that doesn't contain it. That's a real and useful problem to solve. It's also the most visible problem in the same mattress.

The less-visible issue, in the same materials, is the chemistry — the volatile organic compounds that a foam mattress releases throughout its service life, the flame retardants and surfactants that migrate out alongside them, and the combustion-derived compounds that deposit on bedding from cigarette, wildfire, and structure-fire smoke and re-emit for weeks. These don't make headlines because they don't produce visible splinters. They are the part of the picture this publication exists to characterize — see the sleep micro environment framework for the integrative argument that ties the chemistry to the room you actually sleep in.

What we will and will not say

We are not going to claim that any specific mattress in any specific home is harming the people sleeping on it. The available evidence does not support that claim.

What we will say: fiberglass fire sleeves are common in budget-tier mattresses sold in North America, concentrated in the under-$400 price tier and present in many older mattresses still in use. A fiberglass mattress with the cover intact is, by all available evidence, low-risk for routine use. A fiberglass mattress with the cover removed has caused documented home contamination, cleanup costs in the thousands, and short-term symptoms in residents.

The single most useful thing you can do is know what's in your mattress, and not unzip the outer cover if it contains fiberglass. Check the law tag. If it's fiberglass-free, you have no fiberglass-specific concern — though chemistry has other dimensions we cover elsewhere. If it does contain fiberglass, leave the cover on, use a separate washable protector on top, and you have substantially eliminated the practical risk. If you're shopping for a new mattress and want to avoid fiberglass entirely, the list of brands with documented disclosure above is the place to start.

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Frequently asked questions

What mattress brands are fiberglass-free?

Brands with documented disclosure confirming no fiberglass include Avocado, Naturepedic, Obasan, Soaring Heart, Savvy Rest, My Green Mattress, Birch by Helix, Earthfoam, Saatva Classic, and Brentwood Home Cedar. The certifications that reliably exclude fiberglass are GOTS, GOLS, and MADE SAFE. CertiPUR-US is foam-only and does not address the fire barrier, so a CertiPUR-US-certified mattress can still contain fiberglass. See the full brand list above for price tiers.

How do I find a fiberglass-free mattress without spending $4,000?

The most affordable certified-organic options start around $800–$1,200 for a queen — My Green Mattress, Birch by Helix, Earthfoam. In the $600–$1,200 tier, Saatva Classic and Brentwood Home Cedar use non-fiberglass fire barriers without full organic certification. Below $400 for a queen, fiberglass is very likely because no other fire barrier material is economical at that price point.

How do you know your mattress is fiberglass-free?

This is the harder direction, and worth separating from "does it have fiberglass?". Confirming absence takes one of three things. One: the law tag names a non-fiberglass barrier outright — wool, viscose rayon, modacrylic or aramid. Two: the manufacturer answers in writing. Ask specifically, "what is the fire barrier material in [model], and does it contain glass fiber?", and keep the reply. Three: the product carries GOTS, GOLS or MADE SAFE, none of which permit fiberglass. What does not confirm absence: a tag that says only "silica" (the industry survey California requires lists silica-embedded rayon and fiberglass as separate materials), a CertiPUR-US seal (foam only, it says nothing about the barrier), or a brand saying "non-toxic" without naming the fibre. A missing or unreadable tag is not evidence either way — treat it as unknown and leave the cover on. Industry

Why do people avoid fiberglass mattresses?

Not because sleeping on one is established as harmful — it is because of what happens when the cover comes off, and because of who ends up paying for that. Intact, the fibreglass sits in a sewn sock under the outer cover. Opened, it goes everywhere, and the cleanup is genuinely brutal: people report replacing bedding, clothing and sometimes carpet. Wagner et al. (2022) found up to 1% of the fiberglass had already migrated out of the sock into adjacent fabric layers on mattresses that were brand new and never opened, which is why the "just don't unzip it" advice is necessary rather than merely cautious. Peer-reviewed

The second reason is disclosure. The lawsuits over Nectar, Zinus and Ashley are not arguing that fiberglass is poisonous; they argue buyers were not adequately told it was in there before being invited to remove a washable cover. People object to being surprised by a material they would have avoided if asked. Industry

Is it safe to sleep on a mattress with fiberglass?

While the cover is intact and undamaged, the evidence does not show a sleeping hazard. Wagner et al. (2022) found no fiberglass on the outer surfaces of brand-new mattresses, and IARC's 2002 review placed insulation glass wool and continuous glass filament in Group 3, not classifiable as to carcinogenicity in humans. The measured particles were 30–50 µm, which the authors describe as potentially inhalable into the nose, mouth and throat but likely too large to reach deep into the lungs. Peer-reviewed

The honest qualifier: "safe while contained" is a conditional, not a clean bill of health. Containment fails when a cover is unzipped, torn, worn through at a seam, or cut. ATSDR documents skin, eye and upper-respiratory irritation as well-established effects of fiberglass exposure once it is loose. So the practical answer is that the mattress is fine to sleep on and not fine to open — and if it is already damaged, treat it as an exposure problem rather than a laundry problem. Regulatory

What is the least toxic mattress?

There is no single answer, and any page that gives you one is selling something. "Toxic" is not a measured property — it collapses several different questions that have different answers: what the fire barrier is made of, what the foam emits, what the cover is treated with, and what the whole assembly does at body temperature over years. A mattress can be excellent on one and poor on another.

What you can actually check, in order of how much it tells you: the law tag names the fire barrier; GOTS, GOLS and MADE SAFE prohibit fiberglass and screen chemistry beyond it; CertiPUR-US covers the polyurethane foam only and says nothing about the barrier above it. In practice the constructions with the fewest open questions are wool or plant-fibre barriers over natural latex, and they cost more. We name specific brands with published material disclosure above, and take no commission from any of them. Inferred

Does Purple have fiberglass?

No, per Purple's own support page. Purple states that its flame-retardant protocol "does not include fiberglass", naming the Restore Hybrid and Rejuvenate Luxe builds, and adding that "as of 2024" the same applies to PurpleFlex, the Purple Mattress and Purple Plus. There is still a fire sock — Purple says it "is built into the fire sock which is under the mattress cover" — it just is not made of glass. Note the date: that wording describes current production, so if you own an older Purple, check the law tag rather than assuming. Industry

Does Casper have fiberglass?

Some models do, and this is the one where the review sites get it wrong. Casper's own help article, dated 23 June 2025, states that "certain models of Casper mattresses contain a knit fire sock comprised in part of materials containing continuous filament (single-strand) fiberglass". It names the exceptions: the Casper One, Cloud One, Dream Hybrid, Snow Hybrid, Dream Max, Snow Max and Costco Cooling Select are fiberglass-free. Casper also argues the continuous-filament type is not hazardous and attributes that view to the CPSC; that is Casper's characterisation, and we have not verified it against a CPSC document. Either way, the containment rule stands: do not unzip. Industry

Does Novilla have fiberglass?

No, per Novilla's own support page, which states that "Novilla mattresses do not contain fiberglass at all. We took it off once a study suggests this material might be a health threat." Read that second sentence carefully: it is a statement that fiberglass was removed, which means earlier units had it. Novilla does not date the change on that page, so for an older Novilla the law tag is still the only reliable answer. Industry

Does DreamCloud have fiberglass?

No, according to its parent company. Resident Home, which owns DreamCloud, told Tom's Guide that "aside from our luxurious Awara line, which features natural wool, Resident mattresses are crafted using Rayon (or a Rayon and Polyester blend) to meet federal flammability standards". Rayon is a cellulose fibre, not spun glass, so this is a genuine difference rather than a renaming — see the note above about "silica" wording. DreamCloud has previously been less forthcoming about older stock, so a pre-2024 unit is worth checking on the tag. Industry

Does the Nectar mattress contain fiberglass?

Yes. According to a 2026 class action lawsuit, several Nectar models — Classic, Premier, Luxe, and Ultra — contain a woven fiberglass fire sleeve. The law tag lists Glass Fiber at approximately 23% of total fill. The suit alleges Nectar's product materials encouraged cover removal for cleaning without adequately warning consumers about the fiberglass inside.

Does Zinus have fiberglass?

It depends on when the mattress was made. Zinus states that its newly manufactured mattresses use a carbon-rayon fire sleeve rather than fiberglass, and NapLab dates that change to early 2025 — so units made in 2025 or later are fiberglass-free. Older Zinus mattresses (2024 and earlier) contain a fiberglass fire barrier, and a class action over fiberglass exposure from older Zinus models was settled in August 2023. Zinus says it discloses fiberglass on the law tag and that its covers should never be removed, so check the manufacturing date and fill list on your tag before unzipping.

Does Tuft & Needle have fiberglass?

Tuft & Needle states that its mattresses are not manufactured with fiberglass in any component — the fire barrier in the Original, Mint, and Hybrid is a knit polyester-cotton blend treated with a food-grade salt. One nuance worth knowing: the Amazon-exclusive "Nod by Tuft & Needle" is reported to use a fire sock built around a continuous glass filament, so it isn't equivalent to the mattresses sold on Tuft & Needle's own website. If you bought a Nod, check its law tag.

Does Lucid have fiberglass?

It varies by model, and Lucid does not clearly publish its fire-barrier materials. Independent testing by NapLab lists the Lucid model it reviewed as fiberglass-free, but consumer reports and product labels indicate that a number of other Lucid memory-foam models contain fiberglass, and a Lucid owner's fiberglass complaint appears in ClassAction.org's fiberglass investigation. No class action currently names Lucid as a defendant. Because the answer is genuinely model-dependent, don't assume either way — read the law tag on your specific Lucid mattress, and if it lists glass fiber or silica, don't unzip the cover.

Does Ashley have fiberglass?

Older Ashley mattresses did. A $9 million settlement that received preliminary approval in March 2026 resolved claims that certain mattresses sold by Ashley used a fiberglass inner sock without adequately warning buyers; it covers units purchased between October 1, 2017 and June 30, 2024, with a claim deadline of July 17, 2026. Current Ashley Sleep mattresses are a different story: NapLab confirmed in 2025 that Ashley Sleep no longer uses fiberglass, naming the Gruve (M42731 and M71431) as older models that did. Check your purchase date and law tag.

How do I know if my mattress has fiberglass?

Find the law tag sewn into the side seam and look for "glass fiber," "fiberglass," or "silica fiber" in the fill list. These terms all refer to the same material. If present, do not remove the outer cover under any circumstances. Your own law tag is the definitive answer for your mattress; to cross-reference a specific brand or model, NapLab maintains the full database of mattresses analyzed for fiberglass.

Does my mattress have fiberglass?

Possibly — fiberglass fibre was reported in 8.6% of mattress units in the industry survey California requires, concentrated in the budget tier and in older models. The only way to know for sure is your law tag: the steps are in How to check the mattress you already own above. Look for "glass fiber," "fiberglass," or any term with "silica" in the fill list. If it's there, don't remove the outer cover.

How to tell if your mattress has fiberglass

Find the law tag sewn into the side seam and read the fill list. "Glass fiber," "fiberglass," or "silica" means fiberglass is inside; "wool," "rayon," "viscose," "modacrylic," or "aramid" means it isn't. If the tag is missing or unreadable, assume it might and don't unzip the cover. The full walkthrough — including what to do if you can't find the tag — is in How to check the mattress you already own.

What happens if you unzip a mattress with fiberglass?

Removing the outer cover releases glass fibers into the home, contaminating bedding, carpets, furniture, and HVAC systems. Cleanup requires a HEPA-filtered vacuum, protective gear including an N95 respirator per NIOSH guidance, long sleeves, gloves, and eye protection. In severe cases, professional remediation is necessary.

Is fiberglass in mattresses dangerous?

The ATSDR toxicological profile for synthetic vitreous fibers documents skin irritation, eye irritation, and upper respiratory irritation as well-established short-term effects. IARC's 2002 review placed insulation glass wool, continuous glass filament, rock wool and slag wool in Group 3, not classifiable as to carcinogenicity in humans. It left refractory ceramic fibres and special-purpose glass fibres such as E-glass in Group 2B, possibly carcinogenic. We have not found a source stating which of those a mattress fire sock uses. A fiberglass mattress with the cover intact presents low practical risk. The documented harms almost universally involve cover removal.

Which mattress brands use fiberglass?

Fiberglass is common in budget-tier mattresses sold in North America, concentrated in the under-$400 price tier. Brands named in lawsuits include Nectar (class action filed April 2026) and Zinus (settled August 2023). Check the law tag on any specific mattress.

Will fiberglass mattresses be banned?

California passed AB 1059 banning the sale of mattresses containing textile fiberglass, effective January 1, 2027. New York has introduced similar legislation. The federal CPSC has not announced a nationwide ban as of 2026.

Is Zinus fiberglass still a problem?

Zinus settled a class action over fiberglass exposure in August 2023. That settlement didn't remove fiberglass from the whole line; Zinus later switched newly manufactured mattresses (2025 onward) to a carbon-rayon fire barrier. The ongoing concern is older Zinus units — still in homes and resold secondhand — that do contain fiberglass. Check the law tag and manufacturing date on any specific Zinus mattress before unzipping the cover.

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Citations

1. ClassAction.org. "Nectar Mattresses Can Leak Toxic Fiberglass, Class Action Lawsuit Alleges." April 23, 2026. classaction.org Industry
2. Wagner J, Fowles J, Barreau T. (2022). "Fiberglass and Other Flame-Resistant Fibers in Mattress Covers." International Journal of Environmental Research and Public Health 19(3):1695. PMID 35162717 Peer-reviewed
3. Purple Innovation, LLC. "What fire retardant is used on the Purple® Mattress?" Manufacturer support article. support.purple.com Industry
4. Casper Sleep Inc. "Does my Casper mattress contain fiberglass?" Manufacturer support article, 23 June 2025. help.casper.com Industry
5. Novilla. "Do Your Mattresses Contain Any Fiberglass?" Manufacturer support article. support.novilla.net Industry
6. Resident Home (parent of DreamCloud), statement published in Tom's Guide, "Are DreamCloud mattresses non-toxic?" tomsguide.com Industry
7. International Sleep Products Association. "Survey of FR Fibers and Materials Used by Mattress Producers to Meet Federal Flammability Standards." January 31, 2023. Filed with the California Bureau of Household Goods and Services under Business and Professions Code §19104(a) (AB 2998). bhgs.dca.ca.gov Industry
8. ClassAction.org. "Class Action Claims Zinus Mattresses Can Expel Fiberglass." Settled August 2023. classaction.org Industry
9. Code of Federal Regulations, Title 16, Part 1633. Federal Flammability Standard. ecfr.gov Regulatory
10. California Department of Public Health. Factsheet on Fiberglass and Mattresses. cdph.ca.gov Regulatory
11. Sleep Products Association. "Bill to Ban Mattresses That Contain Fiberglass Introduced in New York." April 2025. sleepproducts.org Industry
12. Agency for Toxic Substances and Disease Registry (ATSDR). Toxicological Profile for Synthetic Vitreous Fibers. atsdr.cdc.gov Regulatory
13. NIOSH. Fibrous Glass — About. March 2026. cdc.gov Regulatory
14. NapLab. List of Mattresses With Fiberglass — 395 Mattresses Analyzed. March 2026. naplab.com Industry
15. Global Organic Textile Standard (GOTS) — current criteria for textile certification. Industry
16. Global Organic Latex Standard (GOLS) — current criteria for latex certification. Industry
17. MADE SAFE Hazard List — current screened-out ingredients including textile fiberglass. Industry
18. GreenGuard Gold — current emissions criteria. Industry
19. CertiPUR-US — current certification scope (foam only). Industry
20. International Agency for Research on Cancer (IARC). Monograph 81 (2002). Synthetic vitreous fibers. Regulatory
21. Chen C-H et al. (2020). Respiratory health effects of the fiberglass-reinforced plastic lamination process. Scandinavian Journal of Work, Environment and Health. DOI 10.5271/sjweh.3924 Peer-reviewed
22. [Citation removed — "Boskabady MH et al. (2013). Assessment of health effects related to fiber glass exposure in production workers, Iranian Journal of Public Health" could not be verified. It carried no DOI, PMID or PMC ID, and neither CrossRef nor Europe PMC returns a matching record for that author, title and journal. No claim on this page depended on it: the occupational-exposure evidence is carried by Chen et al. (2020), DOI 10.5271/sjweh.3924, and the irritation effects by the ATSDR profile.]

This piece is part of an ongoing series at Embr on the regulatory and litigation landscape shaping mattress chemistry. Our methodology and editorial commitments are published openly.