Mattress GuidesOlder Vibe mattresses (pre-April 2023) used a fiberglass fire-barrier sock under the cover. New Vibe mattresses made by Sinomax USA are marketed as fiberglass-free with a silica sock. Heres how to tell which one you own, what the cover warning really means, and what to do if a cover has ruptured.
Mattress GuidesSome Sealy mattresses contain fiberglass and some don't - it depends on the line. Sealy Cocoon and all Sealy hybrids are fiberglass-free, while several all-foam Sealy models still use core-spun glass fibers in the fire sock. Here's how to tell which is which.
Mattress GuidesNectar mattresses use CertiPUR-US foam free of formaldehyde, heavy metals, PBDEs, and most VOCs - but most models also contain a fiberglass fire-barrier sock that can shed irritating glass fibers if the cover is removed. Here's the safety record, the 2026 class action, and how to use a Nectar safely.
Mattress GuidesZinus mattresses are made in the USA (Georgia), China, and Indonesia. Here is how to tell which one your model is, plus the fiberglass safety check most guides skip.
Sleep HealthYes - Olee Sleep mattresses use fiberglass as a fire barrier inside the inner cover. Here's why it's there, the health risks if it escapes, how to identify it, and what to do if you already own one.
Mattress GuidesNovaform memory foam itself is CertiPUR-US certified and free of formaldehyde, heavy metals, and PBDE flame retardants. The bigger story is the 2023 mold recall on ~48,000 ComfortGrande and DreamAway mattresses sold at Costco - here's what's actually risky, what isn't, and how to check your bed.
Home TipsAn updated 2026 guide to mattress brands that have used fiberglass as a fire barrier - including the California ban, how to spot it on the label, the health risks if a cover tears, and fiberglass-free brands worth buying instead.
Mattress GuidesYes - many Lucid memory foam mattresses contain fiberglass as a fire barrier. Here's how to verify your model, what the health risks are, and the fiberglass-free alternatives we recommend in 2026.
Home TipsIt 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.
Home TipsMilliard officially says no. Here's how to verify the fire barrier on the model you own, what to do if you're unsure, and how Milliard compares to brands that have been caught using fiberglass.
Mattress ReviewsOlder Lull mattresses contained fiberglass in their fire-barrier layer, but every Lull model sold today is fiberglass-free. Here's what changed, what to do if you own an older Lull, and how to verify before you buy.
Mattress GuidesTempur-Pedic mattresses are CertiPUR-US certified and not toxic by industry standards - but with a 19-day off-gassing window, fiberglass fire barriers, and a VOC lawsuit history, here is what asthma, chemical-sensitive, and infant-room buyers should know before 2026.