The Global Recycled Standard (GRS) is a third-party certification system that verifies the percentage of recycled materials used in a product and the traceability of those materials. It was developed by the Textile Exchange, a global non-profit organization that works to increase sustainability in the textile industry. The GRS certification applies to a wide range of products, including clothing, accessories, home furnishings, and paper products. To earn GRS certification, a product must meet certain requirements related to the percentage of recycled materials used, traceability of those materials, and social and environmental considerations in the production process. The GRS aims to promote the use of recycled materials and to encourage more sustainable production practices in the textile industry.