Recycled Polyester: What 'Made From Plastic Bottles' Actually Means in 2026

“Made from recycled plastic bottles” has become one of the most common sustainability claims on a clothing label. It is not false — but it answers a narrower question than most shoppers think, and the gap is where greenwashing lives.

Recycled Polyester: What ‘Made From Plastic Bottles’ Actually Means in 2026 — illustrative figure for this report.

What rPET actually is

Recycled polyester — rPET — is polyethylene terephthalate reclaimed from existing plastic and re-spun into fibre. The headline number (lower energy and emissions versus virgin polyester production) is real and worth having. The problems are in the details the label omits.

Problem one: the bottles came from a working loop

The overwhelming majority of rPET in 2026 is made from used PET bottles, not from discarded clothing. That matters because bottle-to-bottle recycling is a genuine closed loop — a bottle can become a bottle can become a bottle. Pulling that bottle into a T-shirt is a one-way exit from that loop:

• A garment made of rPET is far harder to recycle again than a bottle
• So “recycled” here often means “took material out of an efficient loop and put it into an inefficient one”
• The bottle industry, losing feedstock, may simply make more virgin bottles

Turning a recyclable bottle into a hard-to-recycle shirt can look circular on the label and be linear in reality.

Problem two: it still sheds microplastics

Chemically, rPET is polyester. A recycled-polyester fleece sheds microplastic fibres in the wash exactly as a virgin-polyester one does. The recycled origin changes the garment’s birth footprint; it does nothing about its life-cycle shedding. A wash-bag filter helps at the margin but does not solve it.

The questions that separate a real claim from a wash

Before you credit a “recycled polyester” claim, ask:

1. Recycled from what? Textile-to-textile is meaningfully better than bottle-derived. If the brand can’t say, assume bottles.
2. What percentage? “Contains recycled polyester” can mean 10%. Look for a stated share.
3. Is it certified? An independent chain-of-custody certification is the difference between a measured claim and a marketing adjective.
4. Is the garment recyclable at end of life? A blended poly-cotton piece is effectively un-recyclable regardless of its recycled content.

rPET is better than virgin polyester. It is not the same thing as sustainable, and a label that leans on the bottle imagery while dodging these four questions is selling the feeling of an answer rather than the answer.