Sleep Certifications, Decoded
CertiPUR-US, OEKO-TEX, GREENGUARD Gold, GOTS, GOLS and MADE SAFE — what each one actually audits, what it leaves out, and which of them address fiberglass.
Mattress makers use certification logos as trust signals, but almost none explain the one thing that matters: scope. Most sleep certifications cover a single component — the foam, or the cover fabric, or the air emissions — not the whole mattress. Here’s what each of the six marks you’ll actually see certifies, and which of them address fiberglass.
| Certification | What it certifies | Addresses fiberglass? |
|---|---|---|
| CertiPUR-US | Foam only | No — foam only |
| OEKO-TEX 100 | Fabric / textile | No — textile safety |
| GREENGUARD Gold | Emissions | No — emissions only |
| GOTS | Whole product | Yes — prohibited |
| GOLS | Whole product | Yes — prohibited |
| MADE SAFE | Whole product | Partly — verify with maker |
The single most useful thing to internalize: a certification on one part is not a claim about the whole.“CertiPUR-US certified” is true and meaningful, but it’s about the foam. If you want a genuinely fiberglass-free bed, only the organic standards (GOTS/GOLS) certify the whole product to that bar — otherwise you need the maker to state fiberglass-free construction outright. Full detail on each mark below.
CertiPUR-US
Certified by Alliance for Flexible Polyurethane Foam · Scope: Foam only · Verify at the certifying body
What it audits
The flexible polyurethane foam only — tested for restricted content (no ozone depleters, no PBDE/TDCPP/TCEP flame retardants, low VOC emissions, restricted heavy metals and formaldehyde).
What it does NOT cover
Everything that isn't the foam: the cover fabric, adhesives, the fire barrier, and the assembled mattress as a whole. It is a foam certification, not a whole-mattress one.
On fiberglass: Says nothing about fiberglass. Fiberglass is used as a fire barrier around or under the foam, not inside it — so a bed can hold CertiPUR-US foam and still contain a fiberglass fire sock in the cover.
OEKO-TEX Standard 100
Certified by OEKO-TEX Association · Scope: Fabric / textile · Verify at the certifying body
What it audits
Every textile component submitted — thread, cover fabric, accessories — tested against a list of 1,000+ harmful substances, with stricter limits the closer the fabric sits to skin.
What it does NOT cover
Only the textile components that were submitted and tested. It is not a claim about the foam core, the springs, or organic content, and a partial certification may cover only the cover, not the whole build.
On fiberglass: A textile-safety standard, not a fiber-type ban. Read it as 'the tested fabric is low in harmful substances,' not 'this mattress has no fiberglass.'
GREENGUARD Gold
Certified by UL Solutions · Scope: Emissions · Verify at the certifying body
What it audits
Chemical emissions from the finished product — limits on 360+ VOCs and total emissions, meeting the stricter Gold thresholds set for schools and healthcare, including very low formaldehyde.
What it does NOT cover
It measures what the product off-gasses into the air, not what it's made of. A GREENGUARD Gold product can still contain materials you might avoid for other reasons — the claim is about emissions, not ingredients.
On fiberglass: An air-emissions standard, not a materials ban. It doesn't certify a mattress as fiberglass-free.
Global Organic Textile Standard
Certified by Global Standard gGmbH · Scope: Whole product · Verify at the certifying body
What it audits
The whole textile product and its supply chain — at least 70% certified organic fibers, restricted chemical inputs, wastewater treatment, and minimum social criteria, verified by on-site audit and residue testing.
What it does NOT cover
It certifies the organic-fiber textile system, so it applies to organic-cotton and natural-fiber builds, not to the polyurethane foam in a conventional memory-foam bed.
On fiberglass: GOTS prohibits fiberglass and synthetic fire barriers in what it certifies — one of the few marks that actually addresses it. That is why GOTS/GOLS beds are the true 'no fiberglass' tier.
Global Organic Latex Standard
Certified by Control Union · Scope: Whole product · Verify at the certifying body
What it audits
Organic latex products — at least 95% certified organic latex by weight, plus limits on harmful substances, emission tests, and filler percentages, certifying both the latex and the finished product.
What it does NOT cover
It is specific to organic natural latex. It says nothing about a memory-foam or innerspring bed, which contain no organic latex to certify.
On fiberglass: Like GOTS, the organic-standard framework does not permit a fiberglass fire barrier in a certified product — a genuine fiberglass-free signal.
MADE SAFE
Certified by MADE SAFE (Nontoxic Certified) · Scope: Whole product · Verify at the certifying body
What it audits
The finished product screened against a banned/restricted-substances list of thousands of known harmful chemicals — a broad 'made without known toxicants' certification applied to the whole item.
What it does NOT cover
It is a hazard-screen for chemical content, not a performance, organic-content, or emissions test. It is also less common on mattresses than CertiPUR-US or OEKO-TEX, so absence isn't a red flag.
On fiberglass: As a nontoxic-materials screen it works against hidden hazards, but always confirm fiberglass-free construction from the maker's own statement rather than assuming any single mark covers it.
Certification questions
What does CertiPUR-US actually certify?
The flexible polyurethane foam only. It tests that foam for restricted chemical content, low VOC emissions, and the absence of certain flame retardants and heavy metals. It does not certify the cover, the fire barrier, or the assembled mattress, and it does not address fiberglass.
Which sleep certifications actually prohibit fiberglass?
The organic standards — GOTS (for organic textile beds) and GOLS (for organic latex) — prohibit a fiberglass fire barrier in the products they certify. Foam and textile certifications like CertiPUR-US, OEKO-TEX and GREENGUARD Gold do not address fiberglass at all.
Is OEKO-TEX Standard 100 a whole-mattress certification?
No. OEKO-TEX Standard 100 certifies the specific textile components that were submitted and tested against its harmful-substances list. A mattress may have an OEKO-TEX certified cover while the foam core carries a separate certification — or none.
Does GREENGUARD Gold mean a mattress is non-toxic?
It means the finished product's chemical emissions into the air meet strict low-VOC limits set for schools and healthcare. That's about what it off-gasses, not what it's made of — a useful signal for indoor air quality, but not a materials or fiberglass guarantee.
Sources
- CertiPUR-US — Frequently Asked Questions — CertiPUR-US certifies the flexible polyurethane foam only, not the whole mattress, and does not address fiberglass fire barriers (accessed July 23, 2026)
- CertiPUR-US — About the certification — Program administered by the Alliance for Flexible Polyurethane Foam; tests foam for restricted content, low emissions and restricted flame retardants (accessed July 23, 2026)
- OEKO-TEX — STANDARD 100 — Textile-safety label: every submitted component tested against 1,000+ harmful substances, with stricter limits the closer the fabric is to skin (accessed July 23, 2026)
- UL Solutions — UL GREENGUARD Certification — GREENGUARD Gold limits emissions of 360+ VOCs to the stricter thresholds set for schools and healthcare — an emissions standard, not a materials ban (accessed July 23, 2026)
- GOTS — Certification & Labeling — Global Organic Textile Standard: whole-product organic-fiber certification (≥70% organic fibers), restricted inputs, and prohibits synthetic/fiberglass fire barriers (accessed July 23, 2026)
- Control Union — Global Organic Latex Standard (GOLS) — Certifies organic latex products (≥95% certified organic latex by weight) and the finished product, with limits on harmful substances and emissions (accessed July 23, 2026)
- MADE SAFE — Nontoxic Certified — Screens finished products against a banned/restricted list of thousands of known harmful chemicals (accessed July 23, 2026)
Put it to use
Mattresses without fiberglass
The beds whose makers actually state a fiberglass-free build — and how to check any mattress yourself.
See the fiberglass-free listBest non-toxic mattresses
Certified, lower-emission beds you can buy on Amazon, each with its certifications named and scoped.
See the certified picks