STANDARD 100 by OEKO-TEX® looks at hazardous substances, such as heavy metals, toxic dyes, and carcinogens, making sure textiles are safe for people and the environment. The standard applies to various levels of production, such as raw and finished yarns, woven and knitted fabrics, accessories, sewing threads or labels, as well as ready-made garments. For a whole garment to be certified, all of its components need to have the STANDARD 100 certification. The criteria catalogue is extensive and is updated at least once a year to include new scientific knowledge and legal requirements. The International OEKO-TEX Association, made up of 17 test institutes, monitors and is responsible for the certification.