The Recycled Claim Standard (RCS) and Global Recycled Standard (GRS) set the criteria for third-party certification of recycled materials and chain of custody. The GRS includes a higher (50%) minimum recycled content percentage and additional social and environmental requirements related to processing and chemical use.

The GRS is intended to meet the needs of companies looking to verify the recycled content of their products (both finished and intermediate) and to verify responsible social, environmental and chemical practices in their production. The objectives of the GRS are to define requirements to ensure accurate content claims and good working conditions, and that harmful environmental and chemical impacts are minimised. This includes companies in ginning, spinning, weaving and knitting, dyeing and printing and stitching in more than 50 countries.