OEKO-TEX labels and trims are something many kidswear brands only think about late – usually when a retailer or customer asks for a certificate. That's when it turns out the fabric is certified but the label, thread or elastic isn't. And a finished garment's certification is only as strong as its weakest component. This article explains how OEKO-TEX Standard 100 works, what the product classes are, why trims matter so much in children's clothing, and exactly what to ask your suppliers for.
What OEKO-TEX Standard 100 is
OEKO-TEX® STANDARD 100 is an independent testing and certification system for textiles, focused on harmful substances. It covers every stage of processing – yarn, fabric, finished articles and accessories. The test list includes banned azo dyes, formaldehyde, heavy metals (including nickel in metal parts), pesticides, chlorinated phenols, phthalates, allergenic dyes and more. The criteria are reviewed at least once a year, and certificates are valid for one year.
One distinction matters: OEKO-TEX Standard 100 proves a product is safe with regard to harmful substances. It is not an eco-label for organic origin or recycled content – that's what GOTS and GRS are for.
White woven elastic 1 cm WE 0010 – strong and firm elastic with Oeko-Tex certificate
White woven elastic 2 cm WE 0020 – durable and firm elastic with Oeko-Tex certificate
Black woven elastic 2.5 cm WE 1025 – durable and firm elastic with Oeko-Tex certificateThe four product classes
| Class | Covers | Examples |
|---|---|---|
| I | Babies and toddlers up to 3 years (36 months) | Bodysuits, rompers, baby bedding, soft toys |
| II | Products in direct contact with skin | Underwear, T-shirts, shirts, bed linen |
| III | Products with little or no skin contact | Jackets, coats, padded items |
| IV | Decoration materials | Curtains, tablecloths, upholstery |
Class I has the strictest limits – for example on pH, formaldehyde and colourfastness to saliva, because babies often put clothing in their mouths. A trim certified to Class I can be used in any lower class, but not the other way round.
Why every component counts
For a finished children's garment to be OEKO-TEX certified, all of its parts must meet the requirements for the relevant class: main fabric, lining, threads, labels, elastics, buttons, snaps, zips, prints and appliqués. The easiest route is for the garment maker to use components that already hold a valid certificate – that means less testing on the finished article, at lower cost and faster.
Example: a baby bodysuit made from certified cotton, but with a label on uncertified tape and snaps with no evidence on nickel release, can't simply carry an OEKO-TEX label. Every component has to be covered.
Labels in kidswear: what to watch
- Material and dyes – woven and satin labels sit directly against the neck or waist. They should be free of azo dyes and have good colourfastness.
- Inks – for printed baby labels, water-based inks without phthalates or azo dyes are recommended.
- Edges – soft, sealed edges with no hard plastic ends that irritate skin.
- Thread – the thread used to sew the label on is a component too.
- Placement – many brands move the label to the side seam rather than the nape; we cover this in our article on babywear labels.
Elastics, snaps and metal parts
Trims are everywhere in kidswear: elastic at waist and cuffs, snaps on bodysuits, zips on sleepsuits. For metal parts the key issue is nickel – in the EU, REACH limits nickel release from articles in prolonged skin contact to 0.5 µg/cm² per week. With elastics, rubber (latex) content and residual chemicals also matter. Our catalogue includes woven elastics in the WE series listed with OEKO-TEX certification, as well as snap fasteners marked nickel free.
What to ask your supplier for
- A copy of a valid certificate – with number, holder's name and expiry date.
- The product class – for babywear, look for Class I.
- The scope – check the certificate covers that exact product type (say, "polyester woven labels"), not a different item from the same company.
- Online verification – check the certificate number with the Label Check tool on the official OEKO-TEX website.
- Nickel documentation – for metal parts, ask for a REACH declaration of conformity or EN 1811 test results.
A practical checklist for a kidswear collection
Before a new children’s collection goes into production, build a table listing every component of every style – fabric, lining, thread, brand label, care label, elastic, buttons, zip, print. For each row record the supplier, certificate number, class and expiry date. You’ll see at once which components break the chain. Update the table every season, since certificates expire after a year and suppliers sometimes change materials. Keep copies of the documents too – retailers and market surveillance authorities may ask for them.
Other standards you may come across
- MADE IN GREEN by OEKO-TEX – a product label combining substance safety with traceability and sustainable production.
- OEKO-TEX STeP – certification of production facilities, not products.
- GOTS – for organic fibres, with its own chemical requirements.
FAQ
Is OEKO-TEX mandatory for children's clothing?
No, certification is voluntary. What's legally required is compliance with REACH and general product safety rules. But many retailers and parents expect it as a mark of trust.
Can I put "OEKO-TEX" on the garment if only the fabric is certified?
No. The label on a finished article can only be used if that article itself is certified. You can state that the fabric is certified, without implying the whole garment is.
Is Class II enough for kids over three?
Generally yes – Class I is required for items for children up to 36 months. For older children, Class II applies to garments in contact with skin.
Developing a kidswear collection and need trims with clear documentation? Send us your list of components and we'll tell you what we can offer. You'll find more on safety and standards in our manufacturing section.
