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Oeko-Tex: certified socks, underwear and T-shirts

What Is the Oeko-Tex Standard 100?

Your clothing lies directly against your skin. The area between the skin and the fabric is an unpleasant environment where sweat, heat, cold and friction can all prevail. This explains why textile safety is important to us.

Our socks, underwear and T-shirts have Oeko-Tex® Standard 100 certification and are therefore 100% skin-friendly and allergy-tested.

Certified Products


Why You Need Certified Socks

Sweat and friction make your skin sensitive and vulnerable to any harmful substances that textiles may contain. But there's no danger of that with our products!

Oeko-Tex have tested our merino and cotton socks, so you can wear them with complete peace of mind.

Order without worries


Who Is behind Oeko-Tex?

The Oeko-Tex® Standard was introduced in the early nineties as a response to the demand for textiles that did not pose a risk to health. Since then, the Oeko-Tex® Association – made up of a series of independent testing bodies – has been guaranteeing safe textile products.

The Oeko-Tex® criteria catalogue provides a consistent, scientifically sound benchmark for the evaluation of potentially hazardous materials in textiles for companies in the textile and clothing industries.


What Is Oeko-Tex?

‘Trust in textiles’ – synonymous with responsible textile production around the world, from the raw materials to the finished product. For industry and retail as well as for the buyers of fashionable, functional and colourful textiles.

Check the Label Out for Yourself

The Oeko-Tex® label offers customers the guarantee that their clothing is non-hazardous to their health. This can be an important decision factor during the purchasing process.

BLACKSOCKS’s test number for socks is 12.HCH.17898, for our organic cotton socks and organic boxershorts is 21.HCH.64096 and for underwear is 12.HCH.17899. You can check the certificate of socks, the certificate of organic products and the certificate of underwear. Alternatively, you can check the validity of our test numbers at any time on


Introducing Your New Favorite Underwear

100% skin tolerant and allergy tested - but not only that. Their perfect fit and Pima cotton make our underwear very comfortable to wear.

Get to know your favorites


What Do You Expect from a T-Shirt?

It has to fit well. Should it be soft too? And not give you a rash?

The T-shirts are 100% allergy-tested and conform to Oeko-Tex Standard 100.

Order Certified T-Shirts


Are You Looking for Some Peace of Mind?

Peace of mind that you are protected from harmful substances. Peace of mind that they will be the right size. Peace of mind that you will never run out of socks.

Then what you need is a sockscription. With a sockscription, you no longer have to worry about whether your socks are 100% skin-friendly.

Subscribe to Peace of Mind

Good to Know

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Winning Socks

As well as holding Oeko-Tex Standard 100 certification, our socks have also been the winners of numerous Kassensturz and K-Tipp tests.

Convince yourself of our test winner, the classic calf socks.

To the Test-Winning Design