One of the certification names you'll run into most often while researching wholesale maternity clothing suppliers is OEKO-TEX Standard 100. In this article we explain what this certificate actually means, and why it matters even more in maternity and postpartum clothing than in other product categories.
What is OEKO-TEX Standard 100?
OEKO-TEX Standard 100 is an independent testing and certification system. It verifies that a textile product — every component of it, from the fabric to the thread, buttons and zippers — does not exceed limits for chemical substances that could be harmful to human health. The certificate is not specific to any one country; it is an internationally recognized independent testing standard.
Why do product classes matter?
The most commonly overlooked aspect of OEKO-TEX Standard 100 is which class a product was tested under:
- Class I: Baby products — the strictest limits (ages 0-3).
- Class II: Products in direct, extended contact with skin — underwear, and most maternity and postpartum products fall here.
- Class III: Products without direct skin contact (for example, some outerwear).
- Class IV: Decorative products such as upholstery.
If a supplier says "we're OEKO-TEX certified" without specifying which class the product was tested under, always ask. Using a Class III fabric for a product that requires Class II defeats the purpose of the certificate.
Why is this especially critical in maternity and postpartum clothing?
Skin can become more sensitive during pregnancy and the postpartum period; in addition, garments worn during this time (especially underwear, nursing bras, postpartum sets) stay in direct skin contact all day. As a result:
- Chemical substance limits should be held to stricter standards than general apparel (Class II).
- Indirect exposure risk to the baby during nursing should be factored in.
- Allergic reaction risk is higher on sensitized skin.
How do you verify a certificate?
Every OEKO-TEX certificate has a unique certificate number. You can check this number through OEKO-TEX's official verification system to confirm both the certificate's validity and its scope. A reputable supplier won't hesitate to share this number, and will send the PDF document on request.
Summary
In maternity and postpartum clothing, an OEKO-TEX certificate isn't a "nice-to-have" — it's fundamental proof of skin-contact safety. Ask for the certificate number, ask about its class, and keep a copy of the PDF for your own records — this is one of the most concrete ways to build trust with your own customers as well.