Oeko-Tex
Below is an overview of the different product classes:
Product class 1: This product class includes products for babies and has the strictest requirements and limit values.
Product class 2: This product class includes products that come into contact with the skin. This includes articles that come into direct contact with the skin, such as blouses, shirts, underwear, mattresses, etc.
Product class 3: This product class includes products without skin contact. This includes articles that have no or minimal contact with the skin, such as jackets and vests, belts, etc.
Product class 4: This product class includes decorative articles. It shall comprise all articles, including initial products and accessories, which are used for decoration purposes, such as tablecloths, curtains, furnishing fabrics, etc.