What Oeko-Tex Standard 100 means on an underwear label
Short answer: Oeko-Tex Standard 100 is a label saying a textile has been tested for a range of harmful substances, and you can read how the system is built at www.oeko-tex.com standard 100. The label tells you about the fabric, but not about fit, durability or how pleasant something is to wear.
What Standard 100 actually says on the label
On an underwear label you often see a small mark with the words Oeko-Tex Standard 100 and a number, and it means an independent institute has tested the textile under set rules. You can read about the rules and limit values at www.oeko-tex.com standard 100, where the organisation explains what a test covers. See bamboo underwear for women.
What the label covers and what it does not
The label is about whether the textile contains substances above set limit values, and it covers every part of the product, including thread and buttons. It says nothing about how well the underwear fits, how long it lasts or where it was sewn, so you still have to judge the fit yourself.
Product classes and why they matter for underwear
Standard 100 sorts textiles into classes by how close to the skin they sit, and underwear belongs to the classes with the strictest requirements, because it lies directly against the body. The class usually appears on the label, so you can see which class the product was tested in.
How to check a label and a number
If you are unsure, you can look up the label number on the organisation's own site and see whether it matches the product you are looking at. Also check whether the label covers the whole product or only part of it, and whether it applies to the finished textile. More at www.oeko-tex.com standard 100.
Why a label is not a promise of comfort
Even if underwear is tested, it can fit badly, chafe or feel too warm for you, and that is personal. The label is a filter, not an answer, so use it together with your own try-on and look at the seams, the elastic and the weight of the fabric.
What about bamboo viscose and other fabrics
The label can be given to many different materials, so you find it on cotton, viscose and blends, and it is the test of the product that counts, not the name of the fibre. Do not conclude anything from seeing the word bamboo on a tag, and look for the label itself.
Care and washing by the label
The label does not change how you wash the underwear, so follow the care instructions in the product and wash gently at a low temperature. Wash new underwear once before you wear it for the first time, so any traces from packing and transport are rinsed out and you start with a clean pair.
What you can do in practice
When you buy new, read the tag, look for the mark and the number, and choose a cut and a fit you like. If you have sensitive skin, talk to your doctor about what suits you, and try a single pair before you switch the whole drawer. Read also about bamboo night pants for women.
Frequently asked questions
Does Standard 100 guarantee comfortable underwear?
No, the label concerns testing for harmful substances and says nothing about fit or comfort. You still have to try the underwear on and judge whether it sits right and feels pleasant on your body.
Where can I learn more about the label?
The organisation behind the label explains the system at www.oeko-tex.com standard 100, and you can read about the product classes there too. You can look up a number from the tag to see whether it matches the product.
Should I wash underwear before wearing it?
Yes, it is a good habit to wash new underwear once by the care label before first use. That rinses out traces from packing and transport, and you can read more about a women's long-sleeved bamboo T-shirt.
