According to Wikipedia, Oeko-tex standard testing is categorized into four classes, depending on how much the textile comes into contact with the skin. The classes are:
1) baby articles
2) articles which come into contact with large areas of the skin, or to which the skin is exposed for long periods
3) outerwear
4) furnishing fabrics
Furnishing fabrics is moved to class 2 for people who sit around naked a lot. Also, I just looked at my sweatpants, and there is no mention of Oeko-tex standard, which makes me nervous.

This man has lost faith in Oeko-tex standard.
Photo: vasta via Flickr (CC)
