Oeko Tex 100 Standard 100 is a stand-alone certification of fabrics or textiles. This certification entails testing textile raw materials, intermediate and end products at different stages of production for the presence of harmful substances.
This certification tests for the presence of raw materials that fall into the four categories:
- Illegal substances
- Legally regulated substances
- Known harmful (but not legally regulated) substances
- as well as parameters for healthcare
The above four categories together exceed known requirements from any national authority. The requirement for the above certification is that all components of an item have to comply with the required criteria without exception.
Sunday follows this standard for the top and side fabrics used to manufacture its mattresses. Further, this standard is followed for Sunday mattresses as a voluntary measure, not as part of a requirement.