Global Recycled Standard (GRS) Certification Explained

GRS certification is issued by independent, accredited certification bodies rather than by Textile Exchange itself. Each site in the supply chain that takes legal ownership of the GRS material, from the recycler through spinners, mills, dyehouses, and garment factories, must generally be certified individually. Auditors conduct on-site inspections and review documentation showing where reclaimed inputs came from and how they were tracked through production.

Central to the system are transaction certificates, documents issued for shipments of certified material between certified companies. These allow the volume of recycled content to be reconciled at each step, which is intended to prevent a company from selling more certified output than the certified input it purchased.

Audits also assess the site-level criteria: workplace and social conditions broadly aligned with international labor conventions, environmental practices such as wastewater and chemical management, and restrictions on certain hazardous substances in processing. Certification is renewed on a recurring cycle, typically annually, and for a product to carry a consumer-facing GRS claim, certification must extend through the seller in the final business-to-business transaction, which is typically the brand.

A GRS label on a product verifies that the stated proportion of recycled content has been tracked through a certified supply chain, and that the facilities handling the material met the standard's social, environmental, and chemical requirements. For products carrying the GRS logo, the standard requires a high recycled-content threshold; lower percentages can still be certified and claimed, but labeling rules differ.

What the logo does not address is equally important for vegan consumers. GRS is material-agnostic: it certifies recycled polyester, nylon, cotton, metal, or glass, but it can equally certify recycled wool, cashmere, down, or leather fiber. A GRS logo therefore says nothing about whether a product is free of animal-derived materials. The fiber composition label, not the certification mark, determines vegan status.

GRS also does not certify that a product is biodegradable, free of microplastic shedding, or carbon-neutral, and it does not evaluate the durability or end-of-life recyclability of the finished item. It is a recycled-content and responsible-production claim, not a comprehensive sustainability or animal-welfare guarantee. Consumers seeking verified vegan products should look for a dedicated vegan certification alongside GRS.

Several certifications occupy neighboring territory, and they are frequently confused. The Recycled Claim Standard (RCS), also administered by Textile Exchange, uses the same chain-of-custody model but verifies only the recycled content itself, without GRS's added social, environmental, and chemical criteria. RCS also has a lower minimum content threshold, so an RCS label is a weaker overall claim than a GRS label.

OEKO-TEX Standard 100 tests finished textiles for harmful substances but says nothing about recycled content or supply-chain custody. The Global Organic Textile Standard (GOTS) resembles GRS in structure, combining fiber verification with social and environmental criteria, but it applies to organic natural fibers rather than recycled inputs; the two can appear together on blended products.

For vegan shoppers, the practical takeaway is that none of these material and chemical standards verify the absence of animal-derived inputs. Recycled polyester and recycled nylon, among the most common GRS-certified materials in apparel, are synthetic and animal-free by nature, but GRS certification of a wool or down product is equally possible.