DEFINITION

What Is GRS Certification?

Definition

Dougie Taylor

GRS stands for Global Recycled Standard. It is a voluntary certification administered by Textile Exchange that verifies recycled-content claims on textiles. A garment certified to GRS at a specified recycled-content threshold has had its supply chain audited from input-material source through finished product, confirming the recycled-content claim is accurate.

For apparel brands making sustainability or recycled-content claims, GRS is the strongest available third-party verification. It is increasingly a buyer requirement at premium retail accounts and an emerging requirement under EU green-claim regulations.

What GRS actually verifies

Three things, in order:

1. Recycled-content percentage. The certification confirms what percentage of the fabric or garment is made from recycled (pre-consumer or post-consumer) material. Common thresholds: 20 percent, 50 percent, 100 percent.
2. Chain-of-custody traceability. Every supplier in the chain from recycled-input producer to finished-good manufacturer must be GRS-certified themselves. The certification cannot be selectively applied to one stage.
3. Social and environmental criteria. Each certified facility must demonstrate compliance with social and environmental performance criteria similar to (but separate from) BSCI and other social-compliance frameworks.

The recycled-content threshold

Two thresholds matter, and brands routinely confuse them. A product needs at least 20 percent recycled content to be certified to GRS at all. It needs at least 50 percent recycled content before it can display the GRS logo or make a consumer-facing recycled-content claim on the finished product. Below 20 percent, GRS is closed to you and softer language like "made with recycled materials" is all that remains.

Most premium apparel programs aim for 50 percent or 100 percent thresholds for exactly this reason, because that is where the claim and the logo both become usable at retail.

For technical fabric programs (recycled polyester, recycled nylon), reaching 100 percent in the textile portion is operationally feasible. Recycled polyester yarn (rPET) is widely available from PET-bottle recycling streams. Recycled nylon yarn (rNylon) is sourced from fishing-net and industrial-waste streams.

For non-textile components (zippers, snaps, labels, hangtags), 100 percent recycled content is more difficult but is increasingly demanded under stricter GRS thresholds.

How GRS chain of custody actually works

This is the part most glossary explainers skip, and it is the part that decides whether your certification survives an audit. GRS does not certify a product in isolation. It certifies every organization that touches the material, using the chain-of-custody rules of Textile Exchange's Content Claim Standard (CCS), and it proves the links with two documents:

• Scope Certificate (SC). Issued to a facility by an accredited certification body, it states which products and processes that facility is certified to handle. Your dye house, your knitter, and your cut-and-sew factory each need their own valid Scope Certificate. If one link in the chain has lapsed, the finished garment is not GRS.
• Transaction Certificate (TC). Issued per shipment, it travels with the goods from one certified facility to the next and records the recycled percentage and the pre-consumer or post-consumer split. The Transaction Certificate is what lets an auditor reconstruct the recycled claim back to the original input. No unbroken trail, no claim.

Certificates are issued by Textile Exchange-approved certification bodies such as Control Union and Ecocert, and every certified facility is re-audited annually. The current version of the standard is GRS 5.0, published July 2026 and mandatory for all certifications from December 31, 2026. For scale, Textile Exchange reported 6,809 GRS-certified facilities as far back as 2019, the most recent figure it has published. Source: Textile Exchange, Global Recycled Standard.

The practical takeaway for a brand: you cannot buy a GRS claim at the finished-goods stage. It has to be built in from the recycled-input supplier forward, which is exactly why a direct relationship with certified factories beats buying through an agent who may or may not hold valid scope at every step. Recycled polyester is the most common GRS fiber, and it is worth remembering that recycled polyester is still plastic: GRS verifies the recycled claim, not that the garment is plastic-free.

GRS vs RCS vs OEKO-TEX, side by side

GRS and RCS both come from Textile Exchange and share the same chain-of-custody engine; GRS adds the social, environmental, and chemical-input layer that RCS leaves out. OEKO-TEX answers a different question entirely, whether the finished fabric is chemically safe against skin, which is why GRS and OEKO-TEX are companions, not substitutes.

What GRS does NOT certify

Three things that often confuse brand teams:

1. GRS does not residue-test the finished garment. GRS does restrict hazardous chemical inputs: certified facilities must run a Chemical Management System and exclude substances banned under REACH and the ZDHC Manufacturing Restricted Substances List. What it does not do is test the finished fabric for chemical residues the way OEKO-TEX STANDARD 100 does. A garment can be GRS-certified for recycled content and still need OEKO-TEX for skin-contact chemistry, which is why most premium brands hold both.
2. GRS does not certify carbon footprint. Recycled content reduces virgin-material extraction, but GRS does not measure or certify total carbon or environmental impact.
3. GRS does not certify "sustainable" as a general claim. It certifies one specific dimension (recycled content) with rigor. Brands using GRS to make broader sustainability claims are stretching the certification beyond its scope.

Cost and timeline of GRS certification

For an apparel brand pursuing GRS-certified production:

1. Factory must be GRS-certified. If the brand's factory is not GRS-certified, the brand cannot ship GRS-certified garments regardless of the fabric source. GRS-certifying a factory takes 4 to 6 months and costs $5,000 to $15,000 in audit fees plus ongoing annual renewal.
2. Per-program certification cost. Each garment program requires transaction-certificate documentation, traceability paperwork, and lot-level audit. Per-program costs typically $1,500 to $4,000 once the factory is certified.
3. Annual maintenance. Annual recertification of the factory plus per-program transaction certificates accumulate $5,000 to $20,000 in annual costs for an active brand.

Who needs GRS certification

Five situations where GRS is justified:

1. Selling into premium specialty retail. REI, Patagonia partner brands, Backcountry-tier accounts, premium European retail. GRS is now a near-baseline vendor requirement.
2. EU sales with green-claim language. EU Green Claims Directive (rolling into force) requires substantiation for environmental claims. GRS substantiation is the cleanest path.
3. Selling to climate-conscious DTC audiences. Brands like Allbirds, Tentree, and Reformation use GRS at category scale because their audiences validate the certification.
4. Sportswear brands competing for sustainable-fabric narrative. Adidas, Patagonia, and other major brands publicly tout GRS-certified collections.
5. Brand teams that intend to make recycled-content claims in marketing. Without GRS or equivalent, the claim is unsupported and increasingly legally exposed.

Who does NOT need GRS certification

Three situations where the investment is misplaced:

1. Brands at sub-$1M revenue selling DTC only. The marketing-claim value at this scale is rarely worth the cost. Use the budget on product quality.
2. Brands whose audience does not value recycled content. Streetwear, basics, performance categories where the audience buys for fit and brand voice, not environmental claims.
3. Brands using "Made with Recycled Materials" claims at low recycled-content thresholds. Below 20 percent, the GRS pathway is closed, and alternative claim language is sufficient.

GRS versus RCS

Textile Exchange administers two recycled-content certifications:

1. GRS (Global Recycled Standard). Comprehensive: recycled-content + chain of custody + social + environmental criteria.
2. RCS (Recycled Claim Standard). Lighter: recycled-content + chain of custody only. No social or environmental criteria.

For brands strictly making content claims without broader sustainability claims, RCS is cheaper and faster. For brands intending to use the certification as part of a sustainability narrative, GRS is the stronger choice.

Related terms

• What is OEKO-TEX certification covers the chemical-safety companion certification often paired with GRS.
• Cotton vs polyester for apparel is the fiber-selection decision that interacts with recycled-content availability.
• What is a tech pack covers where GRS requirements are specified to the production team.