What Does OEKO-TEX Standard 100 Actually Certify?

You've probably seen the OEKO-TEX label on a handful of products without knowing exactly what it means. It shows up on baby clothes, mattresses, and increasingly on bedding brands like ours. Here's what the certification is actually checking for.

It's a chemical safety test, not a quality badge

OEKO-TEX Standard 100 doesn't grade how soft a fabric is or how well it's woven. It tests the finished textile, the fabric you'd actually touch, against a list of over 1,000 regulated and unregulated substances that are known or suspected to be harmful. That includes things like formaldehyde, heavy metals, pesticide residues, and certain dyes and finishing agents that are still legal in many countries but restricted under the standard.

The testing happens on the final product, not just the raw cotton. That distinction matters, because a fabric can start as untreated cotton and still pick up chemical residue during dyeing, printing, or finishing before it reaches a store shelf.

Why the "baby-safe" tier matters

OEKO-TEX certification comes in product classes, and the strictest one, Class I, is reserved for items intended for babies and toddlers, because infant skin absorbs more and metabolizes less. If a fabric passes Class I limits, it's cleared for the most sensitive skin the standard tests for.

That's the tier we test to for Loom & Lay sheets, even though we're not a baby brand. We'd rather hold the sheet you sleep on for eight hours a night to the same bar as something meant for a newborn.

What it doesn't cover

It's worth being precise here. OEKO-TEX Standard 100 doesn't certify organic farming practices (that's GOTS), and it doesn't certify labor or environmental conditions in manufacturing (that's closer to the territory of Fair Trade or similar audits). It's specifically about what's left in the fabric by the time it reaches you.

How to actually verify it

Every certified product gets a unique license number. Ours is printed on the label, and you can look it up on OEKO-TEX's own verification portal to confirm it's real and current. Certifications lapse and get renewed annually, so a number that's expired or doesn't match should be a red flag on any brand claiming it.

Why we test for it anyway

Bedding sits against your skin for roughly a third of your life. Cheaper synthetic dyes and finishing chemicals are common in the industry because they're faster and cheaper to apply. OEKO-TEX testing is our way of proving, with a number you can verify yourself, that we didn't take that shortcut.