Definition
rPET fleece is a soft, brushed polyester knit made from yarn spun out of recycled PET bottles instead of virgin petrochemicals. It warms, weighs and washes like conventional fleece, and the recycled content can be certified and traced. It has become the default fabric for company fleece jackets, vests and blankets.
Definition
Fleece is the construction. rPET is the raw material. Combine them and you get a lofted polyester knit whose fiber started life as a drinks bottle. A typical example is a 280 gsm full-zip fleece jacket in heather grey, knitted from GRS-certified recycled polyester yarn and using the flake equivalent of roughly 25 half-litre bottles per garment. Hanging on a rail, it is indistinguishable from the virgin polyester version next to it.
How rPET fleece works
The chain starts at a bottle sorting line. Bottles are separated by polymer and colour, stripped of caps and labels, washed and ground into flake. That flake is melted and extruded into filament, or cut into staple fiber and spun into yarn. The yarn is circular-knitted, then one or both faces are brushed with wire rollers to raise a nap. A shearing and anti-pill step trims the loose fiber ends. Warmth comes from the still air held inside that raised nap, so loft matters more than thickness.
The trade-offs sit in fiber quality and colour. Recycled staple fiber has a less uniform length than virgin fiber, so budget rPET fleece pills faster on high-friction zones like cuffs and seat. A proper anti-pill finish and a higher yarn twist solve it, and both are worth writing into a spec. Colour is limited by the flake itself, which carries a base tint. Heather grey, navy, black and forest are cheap and consistent, while pale pastels cost more and drift between production runs. Many mills dope-dye rPET fleece by adding pigment to the melt before extrusion, which locks colour into the fiber and cuts water and dyestuff use sharply.
The honest issue is microfiber shedding. Any brushed knit releases more fiber in the wash than a smooth woven, because the nap exposes millions of fiber ends. Recycling the polymer does nothing to change that. A denser knit, longer staple and a clean anti-pill shear all reduce it. Say this out loud rather than positioning rPET fleece as impact free, especially now that EU rules on green claims are tightening and buyers ask for evidence.
rPET fleece in branded merch
- Full-zip and quarter-zip jackets: The core use. A 250 to 320 gsm rPET fleece jacket is the safest piece of company apparel there is, worn by every department and kept for years.
- Vests and mid-layers: Lighter 180 to 220 gsm rPET fleece works as a body warmer or as the inner layer of a softshell, which is where recycled content is easiest to add without changing the fit or price much.
- Blankets and cold-weather accessories: Fleece blankets, beanies, scarves and headbands stretch a winter campaign past apparel and suit remote-team care packages, where a certified material story carries real weight.
rPET fleece is a napped polyester knit made from yarn spun out of post-consumer PET bottle flake, giving the warmth of standard fleece with verified recycled content.
5 tips to elevate your rPET fleece strategy
| Tip | Steps |
|---|---|
| Ask for the certificate, not the claim | Request a GRS or RCS scope certificate plus a transaction certificate for your order. Without both, the recycled claim is unverifiable. |
| Write anti-pill into the spec | Name a target pilling grade, for example grade 4 after 5,000 rubs, so you get a finished fabric rather than a raw brushed knit. |
| Match weight to the wearer | 180 to 220 gsm for indoor layering, 250 to 320 gsm for outdoor and warehouse teams, above 320 gsm for premium gifting. |
| Decorate with heat in mind | Embroidery is safest on a raised nap. If you heat transfer, stay inside the mill's temperature window and use a low-bleed film to stop dye migration. |
| Approve a physical colour standard | Flake tint shifts between batches, so sign off a physical swatch before a large run instead of trusting a screen. |
Key Terminologies
Frequently Asked Questions
Is rPET fleece as warm as regular fleece?
Yes. Warmth depends on knit structure, nap height and fabric weight, not on whether the polyester was recycled. At the same gsm, rPET fleece insulates the same as virgin polyester fleece.
How many bottles go into an rPET fleece jacket?
Roughly 25 to 40 half-litre bottles for a standard adult full-zip, depending on the weight of the fabric and the garment. Ask your supplier for the figure tied to the exact product weight rather than a generic number.
Does rPET fleece pill more than virgin fleece?
It can, because recycled staple fiber lengths are less uniform. A specified anti-pill finish and a well-twisted yarn close the gap, so quality of the finish matters more than the origin of the fiber.
Can you print on rPET fleece or is embroidery better?
Embroidery sits well on the nap and is the usual choice. Heat transfer works if the press stays inside the supplier's temperature range and a low-bleed film blocks dye migration from dark fabric into light artwork.
Does rPET fleece shed microplastics?
Yes. Brushed synthetic knits shed fiber in the wash, and recycling the polymer does not change that. Denser knits, longer staple and cold washing reduce shedding, and it is better to state this than to imply the fabric has no impact.
