For textiles, the Soil Association Organic Standard is based on the Global Organic Textile Standard (GOTS), of which the Soil Association was one of the founding members.
The GOTS is considered the leading global standard for processing textiles made from organically produced natural fibers and uses environmentally friendly and socially responsible criteria to certify a product’s entire production process, from the production of the original fibers up to the end product, including the supply chain.
The GOTS label certifies organic cotton as well as all other organically produced plant and animal-based natural fibers. Synthetically manufactured fibers made of regenerative raw materials, such as viscose and lyocell, cannot be certified, however. Find information on the Soil Association Organic Standard here.