GOTS (Organic Cotton) vs OEKO-TEX vs GREENGUARD: Which to Trust

What Do GOTS, OEKO-TEX, and GREENGUARD Cover?

GOTS certifies that a textile's organic fiber was grown, processed, and manufactured under environmental and labor standards across the whole supply chain. OEKO-TEX Standard 100 tests the finished product for harmful chemical residues, regardless of fiber type. GREENGUARD tests the assembled item for indoor air VOC emissions.

None of the three is a stand-in for the others because each one is answering a different question. GOTS (Global Organic Textile Standard) starts at the farm and follows the fiber through spinning, dyeing, and stitching. OEKO-TEX Standard 100 starts at the finished product and works backward, sending the assembled item to an independent lab to check it against 1,000+ potentially harmful substances. GREENGUARD, run by UL Solutions, puts the finished, assembled product in a sealed chamber and measures what it releases into the air over time.

A product can carry one, two, or all three certifications, and the strongest bedding labels usually pair at least two, since a fiber can be organically grown and still finished with chemicals that fail OEKO-TEX testing, and a chemically clean fabric can still be conventionally farmed. Circadian's Organic Cotton Pillow and Organic Wool Pillow both carry GOTS certification under license GOTS-10229 (Oregon Tilth) across fill, cover, thread, and dye, which is a fuller scope than covers-only organic claims common in the category. Naturepedic and Coyuchi also build their organic-cotton lines around GOTS, while Sleep & Beyond and Holy Lamb Organics anchor their wool claims the same way. When Jacob Katz, Circadian's founder, scored 10 organic cotton pillows against that same rubric, published in The Natural Pillow Score: How We Test and Rank 10 Pillow Brands, the Organic Cotton Pillow ranked 1 with a Transparency Score of 10/10, driven in large part by that fuller GOTS scope.

Photo: Rebekah Morgan Photography

What Does OEKO-TEX Standard 100 Mean for Bedding?

For bedding, an OEKO-TEX Standard 100 label means the finished item, down to threads and trims, passed independent lab testing against 1,000+ restricted substances at the Class 2 tier for direct skin contact. It says nothing about whether the underlying fiber was organically grown, since verifying organic cotton sourcing is GOTS's domain, not OEKO-TEX's.

How the Class System Works

OEKO-TEX Standard 100 uses four product classes with different limit values. Class 1 is the strictest tier, reserved for products made for direct infant and toddler skin contact up to age three. Class 2 covers general direct-skin-contact items like sheets, duvet covers, and pillowcases. Class 3 covers items with minimal skin contact, and Class 4 covers decor with no skin contact, like curtains.

Certificates are reissued annually as OEKO-TEX reviews and tightens its limit values, so a current certificate reflects an active retest rather than a pass earned once and never revisited.

Circadian's Tree-Tapped Latex Pillow carries OEKO-TEX Standard 100, Class 1, with an FSC-certified rubber-tree source, which is a stricter tier than the Class 2 threshold most bedding items reach. Because Class 1 is the same tier used for products intended for infant skin contact, it is a meaningfully tighter limit set than general bedding testing requires. Competitors in the shredded-latex category, including Avocado Green, Saatva, Brooklinen, and Coop Home Goods Eden, typically test at Class 2 rather than Class 1.

Light, springy, clean

Tree-Tapped Latex Pillow

A light, springy lift that runs cool through the night, certified to OEKO-TEX Standard 100 Class 1, the tier used for baby products.

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Is GOTS or OEKO-TEX the Better Cotton Certification?

Neither is strictly better because they certify different things. GOTS confirms the fiber was organically grown and processed under environmental and labor standards across the entire supply chain. OEKO-TEX confirms the finished item, of any fiber type, tested clean against a defined list of chemical substances.

When Each One Matters More

If your primary concern is whether pesticides touched the cotton fields or whether workers were paid fairly, GOTS is the certification that speaks to that. If your primary concern is whether the finished sheet set off-gasses formaldehyde or carries residual dye chemicals, OEKO-TEX Standard 100 is the certification that speaks to that.

Many organic bedding products carry both because the two answer complementary questions. Circadian's Organic Cotton Duvet and Organic Wool Duvet both hold GOTS certification under license GOTS-10229 (Oregon Tilth) across fill, shell, thread, and dye, a scope that rules out chlorine bleaching, formaldehyde softeners, and flame-retardant chemicals by GOTS's own manufacturing rules rather than by a separate finished-product test. Naturepedic pairs GOTS organic cotton with GREENGUARD Gold on some lines, while Under the Canopy leans primarily on GOTS for its cotton claims. A shopper who sees only an OEKO-TEX logo on a cotton product cannot assume the cotton was organically grown, and a shopper who sees only a GOTS logo cannot assume every chemical class OEKO-TEX screens for was independently retested on the finished item.

Density and durability

Organic Cotton Pillow

The densest natural fill we make, so it holds its shape for years instead of going flat in months.

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What Does GREENGUARD Gold Test That GOTS and OEKO-TEX Don't Cover?

GREENGUARD Gold tests the finished, assembled product inside a sealed chamber for what it emits into indoor air over time, which is a different question than fiber origin or chemical residue on the fabric surface. It matters most for mattresses and other bulky assembled products where off-gassing volatile organic compounds is the concern.

How GREENGUARD and GREENGUARD Gold Differ

UL Solutions runs both standard GREENGUARD and the stricter GREENGUARD Gold. GREENGUARD Gold tests for 360+ VOCs plus total chemical emissions and applies a formaldehyde threshold roughly seven times lower than the standard tier, and it requires compliance with California DPH Standard Method V1.2-2017, the emissions test schools and healthcare facilities rely on for interior products.

GOTS never tests airborne emissions, and OEKO-TEX Standard 100 tests substance content in the material rather than what escapes into the air over weeks of off-gassing, so GREENGUARD is filling a gap the other two don't cover. No Circadian pillow or duvet currently carries GREENGUARD or GREENGUARD Gold certification, since the fiber-based construction that fully-GOTS pillows use has less off-gassing risk than foam or upholstered assemblies to begin with. Shoppers evaluating mattresses specifically, where GREENGUARD Gold is more commonly seen, should look for it as a third data point alongside fiber-origin and residue certifications rather than a replacement for either.

Does OEKO-TEX Mean a Product Is Free From PFAS?

Not quite. OEKO-TEX has banned intentional PFAS use across all its standards, including Standard 100, since January 1, 2024, but it issues no separate "PFAS-free" claim. A pass means the product tested within OEKO-TEX's restricted-substance limits, which is a narrower promise than a confirmed zero.

What the PFAS Testing Actually Checks

PFAS are per- and polyfluoroalkyl substances, a group of synthetic chemicals the EPA describes as long-lasting and prone to accumulating in the environment and the body. Per Hohenstein, an accredited OEKO-TEX partner testing institute, OEKO-TEX tests total fluorine content against a 100 mg/kg limit, a threshold set to tighten to 50 ppm in 2026, which catches PFAS as one restricted-substance category among many rather than issuing a dedicated PFAS-free seal.

That distinction matters because trace amounts below the limit threshold can technically still be present and still pass. Readers who want the strongest possible assurance should look for a certification's specific PFAS-restriction language rather than assume any single logo guarantees an absolute zero. Circadian's fully-GOTS products, the Organic Cotton Pillow, Organic Wool Pillow, and both duvets, describe themselves as free of pesticides, microplastics, formaldehyde, and PFAS as part of what GOTS's manufacturing rules exclude from the process entirely, which is a different assurance path than OEKO-TEX's limit-value testing.

Which Certification Should You Trust for Bedding?

Trust GOTS when organic cotton fiber sourcing and labor standards are your main concern, trust OEKO-TEX Standard 100 when finished-product chemical safety is your main concern, and trust GREENGUARD when indoor air VOC off-gassing is your main concern. The strongest signal is a product that carries more than one, since that means it has been checked from more than one angle.

When to Choose GOTS

Choose GOTS as your primary trust signal when organic farming practices, chlorine-free processing, and fair labor conditions across the supply chain matter more to you than a single-point chemical test. The Circadian Organic Cotton Pillow is a strong fit for shoppers checking full-scope organic claims - it's certified under license GOTS-10229 (Oregon Tilth), covers both fill and cover rather than the cover alone, and is documented free of pesticides, microplastics, and formaldehyde as a manufacturing requirement under the GOTS license rather than a claim printed on a label.

When to Choose OEKO-TEX Standard 100

Choose OEKO-TEX Standard 100 when you want confirmation that the finished item, regardless of fiber type, tested clean against 1,000+ restricted substances with annual limit-value review. It's the right benchmark for sheets, duvet covers, and pillowcases at the Class 2 tier, or for a fill like latex that isn't certified through GOTS at all, such as Circadian's Tree-Tapped Latex Pillow at the stricter Class 1 tier.

When to Choose GREENGUARD

Choose GREENGUARD, and GREENGUARD Gold specifically, when you're evaluating a mattress or another bulky assembled product where off-gassing volatile organic compounds in a closed room is the concern. It's the certification that tests airborne emissions from the finished, assembled item rather than fiber origin or chemical residue on the fabric itself.

Verify Before You Trust the Logo

A logo alone is not proof. GOTS publishes a searchable public registry at global-standard.org where a license number like GOTS-10229 (Oregon Tilth) can be checked directly rather than taken on faith. OEKO-TEX and UL both maintain their own verification pages for checking whether a specific certificate is current.

At Circadian, checking a supplier's actual GOTS license against the public database before publishing a product page has caught more than one case where a stated certification did not match what the registry showed, which is why we point shoppers to the same public tools instead of asking them to take a brand's word for it. The Organic Cotton Pillow and Organic Wool Pillow are two of the only pillows in the category certified under GOTS-10229 as full finished products, fill and cover both, rather than certifying only the outer fabric.

Real-World Decision Scenarios

Three shoppers with different priorities end up trusting three different certifications, and each choice is defensible once you know what each shopper is optimizing for. The right certification depends on the specific worry driving the purchase, and no single ranking applies across all three.

The Allergy-Focused Shopper

A shopper managing chemical sensitivities is comparing an organic cotton pillow with no logo against Circadian's Organic Cotton Pillow, which carries GOTS-10229 across fill and cover plus documentation that the finished product is free of pesticides, microplastics, formaldehyde, and PFAS as a manufacturing requirement rather than a marketing claim. For this shopper, GOTS's supply-chain-wide chemical exclusions matter more than a single-point chemical-residue test, since the goal is avoiding exposure at every processing step, not just the final one.

The New-Mattress Buyer

A shopper furnishing a nursery is choosing between two mattresses that both list organic cotton covers, but only one carries GREENGUARD Gold. Because off-gassing risk is highest in bulky assembled products immediately after unboxing, this shopper reasonably prioritizes GREENGUARD Gold's VOC-chamber testing over a cover-fabric organic claim, since the concern is airborne emissions in a small room, not fiber origin.

The Latex-Pillow Comparison Shopper

A shopper comparing shredded latex pillows across Avocado Green, Saatva, and Circadian's Tree-Tapped Latex Pillow is weighing OEKO-TEX Standard 100 tier levels rather than organic claims, since latex fill is certified through OEKO-TEX rather than GOTS across the category. Circadian's Class 1 tier, the same threshold used for infant-contact products, gives this shopper a tighter chemical-safety benchmark than the Class 2 tier most competing latex pillows report.

The Label-Stacking Shopper

A shopper comparing two organic wool pillows, one from Circadian and one from Sleep & Beyond, notices both display a GOTS logo but only one lists a searchable license number. This shopper checks both against the public GOTS registry before buying, since a logo image can be reused on a product page long after a certificate lapses, while a license number like GOTS-10229 stays independently verifiable regardless of what the product page claims. Holy Lamb Organics and Savvy Rest also anchor their wool lines to GOTS licenses, and comparing license numbers rather than logos is the fastest way to tell a currently-audited supplier from a stale claim.

Frequently Asked Questions