It depends on the model. Beautyrest mattresses use SIMGARD (Kevlar plus cellulose) - no fiberglass. The cheaper Simmons memory-foam tight-tops sold at Costco, Home Depot, and Amazon do contain a fiberglass fire sock. Here is which is which and how to verify on the law tag.
Short answer: it depends on the model. Premium Simmons Beautyrest mattresses (Black, World Class, Harmony Lux, Pressure Smart, Silver, BR800) use SIMGARD - a Kevlar and cellulose-fiber fire barrier with no fiberglass. The cheaper Simmons-branded memory-foam mattresses sold at Costco, Home Depot, and Amazon (the 8-, 10-, and 12-inch tight-top boxed beds licensed by Serta Simmons Bedding) use a fire sock that does contain glass fibers, which manufacturer Q&A pages confirm and warn customers not to remove the cover.
Banner Mattress carries Beautyrest in-store, so we have audited every current line tag-by-tag in our showroom. The 2023 Serta Simmons Bedding Chapter 11 restructuring did not change the materials specification on either side of the catalog - the premium Beautyrest factories kept SIMGARD, and the licensed-import budget line kept its fiberglass fire sock. Below is what is in each product, how to read your law tag, and what to do if you already own the budget version.
No. Every current Beautyrest line - Black, Harmony Lux, Pressure Smart, Silver, BR800, BeautySleep - uses SIMGARD, a Kevlar and cellulose-fiber fire barrier. Beautyrest customer support confirmed this in writing in September 2025.
Yes. The 8-, 10-, and 12-inch Simmons memory-foam tight-tops sold through Costco, Home Depot, Walmart, and Amazon use a fire sock that contains continuous glass filament (fiberglass), per the manufacturer Q&A on Home Depot product page 700800134.
No. SSB filed Chapter 11 in January 2023 and emerged later that year under new ownership. The fire-barrier specs on both Beautyrest (SIMGARD) and the licensed Simmons foam line (fiberglass sock) remained identical before and after the restructuring.
Yes - as long as you never unzip the cover. The fiberglass is contained inside an inner fire sock under the cover. Add a zippered mattress encasement for extra peace of mind, and never remove the original cover for washing.
The Simmons name covers two very different catalogs. NapLab's 2025 audit of 395 mattresses lists every current Beautyrest model as fiberglass-free, while Home Depot's own product Q&A for the 8-inch and 10-inch Simmons memory-foam tight-top mattresses reads, in the manufacturer's words, "the mattress uses a fire retardant fire sock which contains fibreglass." Here is the line-by-line breakdown.
Beautyrest Black (Hybrid, K-Class, L-Class, C-Class). SIMGARD fire barrier. Kevlar plus cellulose char-forming layer. No fiberglass. CertiPUR-US foams.
Beautyrest Harmony Lux and Pressure Smart Hybrid. SIMGARD. Confirmed fiberglass-free by Beautyrest support chat (NapLab, September 2025).
Beautyrest Silver, Silver DualCool, BR800. SIMGARD. Confirmed fiberglass-free in 2025 follow-up audit.
BeautySleep Dream Weaver. Fiberglass-free per manufacturer.
Simmons 8" Firm Memory Foam Tight Top (Home Depot, model 700800134). Fire sock contains fiberglass. Manufacturer Q&A: "the mattress does contain a form of fiberglass. The continuous glass filament is heat-treated and woven into a flame-resistant fabric."
Simmons 10" / 12" Memory Foam boxed mattresses (Costco, Walmart, Amazon). Same licensed construction as the 8" tight-top. Cover is not designed to be unzipped. Fiberglass fire sock present.
Simmons-branded Costco Beautyrest. Mixed. The Beautyrest Black line stocked at Costco follows the SIMGARD spec. The cheaper Simmons foam mattresses Costco carries under the parent name use the fiberglass sock - Reddit threads from r/Mattress in 2023-2024 confirm this on the law tag.
If your tag reads anything close to "60% glass fiber", "continuous glass filament", or simply "fiberglass" under "fiber content," it is a budget-line Simmons, not a Beautyrest.
You do not need to unzip anything. Federal law (16 CFR 1632/1633) requires every U.S. mattress to carry a sewn-in law tag that lists the fiber content of the cover and fire barrier by percentage.
Photograph the tag before you do anything else. If you ever file a CPSC complaint or join a class action, that photo is the evidence.
Containment beats removal. Do not unzip the cover - the fiberglass fire sock sits directly under the cover on the budget Simmons foam line, and unzipping is what triggers nearly every fiberglass-release incident reported to the CPSC SaferProducts database.
If you are still shopping and want to avoid the question entirely, stay inside the Beautyrest name and skip the unbranded "Simmons" foam mattresses sold at warehouse clubs. Every current Beautyrest line uses SIMGARD. Outside the Simmons family, fiberglass-free picks our team has tested and verified on the law tag include Saatva Classic, Helix Midnight, Bear Original, Avocado Green, and Nectar Classic - all rayon, wool, or silica fire barriers, none with glass fiber.
Avoid: any Simmons-branded boxed mattress under $400, the Costco "Simmons Beautysleep" 8-inch memory foam, and the Home Depot Simmons 8-inch and 10-inch tight-tops. All three lines use the fiberglass fire sock.
Check the law tag and the model number. Beautyrest mattresses always carry the Beautyrest sub-brand (Black, Silver, Harmony Lux, Pressure Smart, BR800). Budget Simmons mattresses are sold under just the Simmons name with model numbers like 700800134, often as 8- or 10-inch tight-top memory foam beds at Costco, Home Depot, or Walmart.
Mainstream sleep medicine and the CPSC consider an intact fiberglass-barrier mattress safe for normal use. Risk arises only when the cover is opened, torn, or worn through - at which point glass fibers can become airborne and contaminate the surrounding room.
No. The cover sits directly over the fiberglass fire sock and is not designed to be removed. Manufacturer Q&A explicitly warns against unzipping. Spot-clean only, or buy a separate zippered encasement that is washable.
No active recall as of 2026. The major fiberglass class action ($9 million settlement) covers Ashley, Nectar, DreamCloud, and Siena - Simmons is not named. CPSC complaints exist on SaferProducts.gov against budget Simmons foam units, but no formal recall has been issued.
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Banner Mattress EditorialThe Banner Mattress editorial team publishes independent mattress reviews, buying guides, and sleep-health advice. Since 2018 we've tested 1,000+ mattresses and 3,000+ pillows, sheets, and bedding accessories in our review lab - every recommendation is hands-on, never sourced from vendor talking points. Affiliate links may earn us a commission, but never change what we recommend.
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