Textile Labels and Certifications Decoded: Oeko-Tex, GOTS and the Rest
Maison Linéa guide · updated 2 September 2026
Oeko-Tex Standard 100 certifies the finished product free of harmful substances (the key label for bed linen); GOTS certifies organic cotton and the production chain; ISO 9001 certifies a company's organisation, not its products. “Hypoallergenic” or “hotel quality” are not labels — just words.
Why labels matter (especially for white linen)
A white sheet has been through invisible treatments: bleaching, finishing agents, possibly optical brighteners. A poorly controlled textile can retain formaldehyde, heavy metals or problematic dyes — all the more sensitive since a sheet spends seven hours a night against the skin, and hospitality linen touches hundreds of different skins. Labels exist to turn “trust us” into “check for yourself”: a serious certificate is public, numbered and verifiable online.
They matter twice as much in Morocco, where most linen is sold with no label at all (the buying landscape here): knowing how to read the labels — and how to spot the fake claims — is the buyer's only real defence.
The labels that actually certify something
| Label | What it certifies | What it does NOT say | Verifiable? |
|---|---|---|---|
| Oeko-Tex Standard 100 | finished product tested against 100+ harmful substances, strict thresholds (class I to IV) | nothing about origin or production ecology | yes — certificate number on oeko-tex.com |
| GOTS | organic fibres (≥ 70-95%) + environmental and social criteria across the whole chain | nothing about the fabric's mechanical durability | yes — public GOTS database |
| Oeko-Tex Made in Green | Standard 100 + traceability to responsible factories | — | yes — traceability QR code |
| ISO 9001 | the COMPANY's quality system (processes, traceability) | nothing about the product's composition or safety | yes — certification-body certificate |
| Sanfor / “pre-shrunk” | anti-shrink fabric treatment | not a health label | technical claim, not certified |
For bed and bath linen, the practical hierarchy is simple: Oeko-Tex Standard 100 is the number-one relevant label (skin-contact safety), GOTS adds to it if the organic approach matters to you, and ISO 9001 speaks to a manufacturer's seriousness — not to its fabric. The term Oeko-Tex is detailed in our glossary.
The claims that guarantee nothing
- “Hotel quality”: no body certifies it; it is verified through figures — weave density, composition, GSM — not through the claim;
- “Hypoallergenic”: no legal definition in textile; only an Oeko-Tex class I (baby articles) comes seriously close;
- “Egyptian cotton”: massively usurped in world trade (see the polycotton/cotton guide) — without a Cotton Egypt Association certificate, it is just a word;
- “Luxury percale”, “royal sateen”: the weave has a name, the nobility is invented;
- “1000 thread count”: beyond 400 TC, the number itself is a counting artifice;
- Missing label: stating the composition is a legal obligation — its absence is information in itself.
How to verify a certificate in 2 minutes
- Ask for the number: an Oeko-Tex certificate reads “no. XX.XX.XXXXX + issuing institute”. A certified seller gives it without hesitation;
- Check online: oeko-tex.com > Label Check — the number must match the product type (a “yarn” certificate does not cover a finished sheet) and be currently valid (annual renewal);
- Beware of the logo alone: a logo is just ink — anyone can print it; a number, on the other hand, can be verified;
- For GOTS: the public database at global-standard.org lists certified operators;
- With no label at all: judge on published figures and commercial behaviour — full specifications, cash on delivery with the parcel opened, a written exchange policy. A transparent seller without a label beats an unverifiable logo.
Where we stand, transparently
Maison Linéa is a sewing workshop: in Marrakech we sew fabrics we select on specification — 50/50 polycotton percale for the bed, 550 and 700 g/m² combed-cotton terry for the bath. On every product page we publish what can be measured: composition, weave, pocket depth, GSM, dimensions. We claim no label we cannot document — and when a certification of our fabrics is available from our suppliers, it is shared on request via WhatsApp or the contact page.
Our conviction follows this guide's logic: trust is built on the verifiable — published figures, displayed prices, the parcel opened before payment, written exchange terms — labels are one brick of it, not a substitute. To evaluate any linen, the triptych remains: composition + weave + the seller's behaviour.
Frequently asked questions
What is the Oeko-Tex label on bed linen?
Oeko-Tex Standard 100 certifies that the finished product has been tested against more than a hundred harmful substances (formaldehyde, heavy metals, pesticides, azo dyes…) with thresholds stricter than the regulation in force. Every certificate carries a number that anyone can verify on oeko-tex.com.
What is the difference between Oeko-Tex and GOTS?
Oeko-Tex tests the safety of the finished product, whatever the fibre's origin; GOTS certifies a complete organic-cotton chain with environmental and social criteria. A sheet can be Oeko-Tex without being organic; a GOTS sheet generally also meets safety requirements.
Is the claim “hypoallergenic” reliable?
No: it has no legal definition in textile and commits to nothing. For sensitive skin, look for Oeko-Tex Standard 100 (class I or II), wash new linen before use and favour whites without excessive optical brighteners.
Is unlabelled linen necessarily bad?
No — plenty of good textiles, especially in short supply chains, carry no certification at all (it is costly and administratively heavy for a small workshop). What matters is the verifiable: written composition, numbered specifications, the chance to see the product before paying. An unverifiable label is worse than an honest absence of one.
Published figures rather than slogans — our product pages play it straight: