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Glass & Cotton

Bedding & Home

What OEKO-TEX certified actually means

It is a harmful-substance test on the finished article. It is not an organic claim, and it is read as one constantly.

Last reviewed October 13, 2026 — Selena H.

Bare mattress on a wooden bed frame in daylight

OEKO-TEX STANDARD 100 is a label for textiles tested for harmful substances. Every thread, button and accessory in a certified article is tested against a list of over a thousand harmful substances, with requirements that get stricter the more skin contact the product has.

What it is not is an organic certification. It makes no claim about fiber origin, farming practice, labour conditions or environmental impact of production — and it is routinely cited as if it did. OEKO-TEX itself offers a separate ORGANIC COTTON standard for that purpose, which is the clearest possible indication that STANDARD 100 is not it.

Quick picks

#ProductBest forMaterialPrice
1
Bare mattress on a wooden bed frame in daylight
Avocado Green MattressStates OEKO-TEX STANDARD 100 Class I across every mattress, plus GOTS and MADE SAFE.
Class 1 across a product lineGOLS-certified organic Dunlop latex
2
Organic mattress with a quilted cotton cover
Naturepedic Organic MattressMADE SAFE and GREENGUARD Gold across the bedding line, per MADE SAFE's own publication.
Certification across beddingOrganic cotton

Tap a row to jump to that write-up. Prices are not shown on this site because they change — the button sends you to the live Amazon listing.

What OEKO-TEX STANDARD 100 does NOT cover

  • Organic content. Nothing in the standard requires organic fiber. A fully conventional cotton sheet can be certified.
  • Labour conditions. Not in scope. GOTS covers this; STANDARD 100 does not.
  • Environmental impact of production. Water use, emissions and wastewater are outside the standard.
  • Durability or quality. It is a substance test, not a performance standard.
  • Substances outside its list, though the list runs past a thousand entries and includes regulated and unregulated substances alike.

The four product classes

The class matters when you are comparing products. A Class 1 certification is a meaningfully higher bar than Class 4, and a brand that holds Class 1 across a product line — as Avocado states it does for its mattresses — is making a stronger claim than one certified to Class 4.

Requirements get stricter with skin contact
ClassApplies toExample
Class 1Products for babies and children under 3Crib sheets, baby clothing — the strictest limits
Class 2Items with direct skin contactBed linen, t-shirts, underwear
Class 3Items without direct skin contactJackets, outer layers
Class 4Home textiles and decorative materialsCurtains, upholstery fabric

What the testing actually covers

The substance list spans regulated chemicals under frameworks such as REACH and CPSIA plus substances that are not yet regulated anywhere, which is the part that makes it useful. Testing is on the finished article including its components — the button, the thread, the zip — not just the main fabric.

That is a genuinely strong answer to the question most people are actually asking, which is "what is in the thing touching my skin". It is simply a different question from "how was this grown".

How to read a certified product correctly

  1. Find the certificate number, which appears alongside the label and the issuing institute.
  2. Check the product class. Class 1 and Class 2 are the meaningful ones for bedding and clothing.
  3. Check what was certified — the fabric, the finished article, or one component.
  4. Do not read it as organic. If organic matters to you, look for GOTS as well.
  5. Check the date. Certificates are time-limited and renewed.

Products with OEKO-TEX or comparable certification

Two products where a finished-item certification exists and we could confirm it from published material.

The picks in full

Bare mattress on a wooden bed frame in daylight

1. Best for Class 1 across a product line

Avocado Green Mattress

States OEKO-TEX STANDARD 100 Class I across every mattress, plus GOTS and MADE SAFE.

Made of
GOLS-certified organic Dunlop latex, organic wool, organic cotton, steel coils
Certified to
Certified: GOTS finished product, GOLS latex, MADE SAFE, GREENGUARD GoldThird-party certified to GOTS finished product, GOLS latex, MADE SAFE, GREENGUARD Gold.
Certifications
GOTS, GOLS, MADE SAFE, GREENGUARD Gold, OEKO-TEX 100 Class I
Flame barrier
Wool, no added flame retardant chemicals per the brand
Weight
Heavy. Two people to move it

Class 1 is the strictest product class — the one for babies and children under three — and holding it across an entire mattress line is a stronger claim than a single certified component. It sits alongside GOTS finished-product certification, MADE SAFE and GREENGUARD Gold.

What you give up

Price and weight. Certification says nothing about whether the firmness suits you.

Who it's for
Anyone buying on verifiable certification rather than brand language.

Who should skip it
Budget buyers.

Organic mattress with a quilted cotton cover

2. Best for Certification across bedding

Naturepedic Organic Mattress

MADE SAFE and GREENGUARD Gold across the bedding line, per MADE SAFE's own publication.

Made of
Organic cotton, organic wool or PLA batting, encased coils
Certified to
Certified: MADE SAFE, GREENGUARD GoldThird-party certified to MADE SAFE, GREENGUARD Gold.
Certifications
MADE SAFE and GREENGUARD Gold across the bedding line
Latex
Optional, not standard
Note
Also makes the matching crib mattresses

Certification across an entire line — mattresses, pillows, sheets and changing pads — rather than on a flagship product only. MADE SAFE screens full formulas against substances known or suspected to harm health, which is a different and complementary check to OEKO-TEX's substance testing.

What you give up

Expensive, and latex is an option rather than standard in this range.

Who it's for
Households certifying a whole bedroom rather than one item.

Who should skip it
Anyone shopping on price.

How we chose, and what we did not do

Every product on this page was checked against its published material composition and its third-party certifications, with each claim labeled as certified, manufacturer-stated or independently tested by a named party. We do not run a lab and we do not claim to have used these products — the full method is here.

Questions people actually ask

Does OEKO-TEX mean organic?

No. OEKO-TEX STANDARD 100 certifies that a finished textile was tested against a list of over a thousand harmful substances, in a class set by how much skin contact it has. Organic fiber content is a separate claim under a separate standard.

What does OEKO-TEX STANDARD 100 test for?

Over a thousand harmful substances, covering regulated chemicals under frameworks such as REACH and CPSIA plus substances not yet regulated. Testing covers every component — thread, buttons, accessories — not only the main fabric.

What are the OEKO-TEX product classes?

Class 1 for babies and children under three, with the strictest limits; Class 2 for direct skin contact such as bed linen; Class 3 for items without direct skin contact; Class 4 for home and decorative textiles. The more skin contact, the stricter the testing.

Should I look for GOTS or OEKO-TEX?

Both, for different reasons. GOTS covers organic fiber plus processing chemistry, wastewater and labour across the chain. OEKO-TEX STANDARD 100 answers what is in the finished fabric. Several good products hold both.

Sources

  1. OEKO-TEX — STANDARD 100 — Harmful-substance testing by product class. Not an organic-content claim
  2. Global Organic Textile Standard (GOTS) — the standard — Whole-supply-chain certification: fiber, chemical inputs, wastewater, social criteria
  3. Avocado Green Mattress — organic mattress certifications
  4. MADE SAFE — Naturepedic certified bedding

Read next

More in this sectionHow we choose

Written by Selena H., owner of Glass & Cotton.