Recycled Polyester in Apparel: An Honest Assessment
By The Velocity Wear Team
Recycled polyester is the default sustainability story in apparel, and it is genuinely useful. It is also routinely oversold, in ways that are now a legal risk as well as a credibility one. Here is what it does and does not do.
What rPET genuinely improves
- **It displaces virgin petrochemical feedstock.** Producing polyester from recovered material rather than new oil is a real reduction in extraction.
- **It generally uses less energy** than producing virgin polyester, because polymerisation has already happened once.
- **It diverts material** from waste streams into a second use.
- **It performs identically.** Recycled polyester is chemically the same material, so there is no durability or performance penalty to manage.
What it does not change
- 1**Microfibre shedding.** Recycled polyester sheds synthetic microfibres in the wash exactly as virgin polyester does. This is one of the main environmental concerns about synthetics and rPET does not address it at all.
- 2**End-of-life.** A recycled polyester garment is no easier to recycle than a virgin one, and if it is blended with cotton it is just as hard.
- 3**The bottle problem.** Most rPET comes from PET bottles, and bottle-to-bottle recycling is a closed loop that can run repeatedly. Turning a bottle into a t-shirt takes it out of that loop, because textile-to-textile recycling is not yet operating at comparable scale. Whether this is a net gain is genuinely contested.
- 4**Dyeing and finishing impact.** Water, energy and chemistry in the dyehouse are unaffected by what the fibre was made from.
How to talk about it without overclaiming
The safe form is a specification with a percentage and a scope. "This garment is 60% recycled polyester, certified to a named standard" is verifiable. "Made from recycled materials" on a garment with 15% recycled content is the kind of statement green-claims rules exist to stop.
Be equally careful with bottle-count framing. "Made from twelve recycled bottles" is vivid, frequently unverifiable at garment level, and implies a benefit that the bottle-to-bottle argument undercuts. If you cannot evidence it per unit, do not print it.
Certification, and what it actually covers
Recycled content claims are normally supported by chain-of-custody standards which track material through the supply chain. Two things matter when you rely on one: the scope, and the level.
A certificate held by the yarn spinner does not automatically cover your finished garment — the chain has to be unbroken to the point you are claiming at. Ask for the certificate reference and check what it covers, because "our fabric is certified" is a sentence that is often true and frequently irrelevant to the claim being made.
Where it fits sensibly
rPET makes clear sense where polyester is the right fibre anyway: performance wear, outerwear shells, sports kit, anything needing moisture management or shape retention. Choosing recycled over virgin there is a straightforward improvement with no trade-off.
It makes less sense as a way of turning a cotton garment into a sustainability story. If the alternative is a heavier single-fibre cotton that lasts twice as long, durability probably wins — and it is a much easier claim to defend.
