Cotton under an impact program or standard like GOTS make up <6% of global fibers, so the garments made from these materials are special.
The Global Organic Textile Standard (GOTS) does a lot of finger-wagging early in the supply chain to make sure materials are grown and yarn is made to safe standards. They say hell no to things like the use of pesticides, GMOs, toxic chemicals, like heavy metals and certain colorants as part of what they call their “no hazard in, no hazard out!” policy. They also set strict human-rights and social criteria throughout the entire value chain. GOTS was founded by The Organic Trade Association in the USA, IVN in Germany), The Soil Association in the UK, and the Japan Organic Cotton Association.