Do clothes made from recycled plastic bottles shed more microplastics?

What's actually in it

Fleece jackets, polyester shirts, and activewear are often made from recycled plastic bottles. It sounds green, but the fabric is still plastic. Every time you wash it, tiny plastic fibers break off and go down the drain into waterways and eventually into food and drinking water.

Recycled synthetic fabric is made from plastic that's been melted, shredded, and re-spun into fiber. The recycling process weakens the fibers. Weaker fibers break more easily.

What the research says

A 2026 study in Environ Sci Technol measured microplastic fiber emissions from mechanically recycled textiles versus virgin synthetic fabrics. They found recycled fabric shed significantly more microplastic fibers per wash cycle. The shorter, damaged fiber structure from the recycling process made them more prone to breaking off.

Every wash with recycled polyester fabric releases hundreds of thousands of fibers. Those fibers pass through most wastewater treatment systems and accumulate in the environment.

Natural fibers break down. Plastic fibers don't. Organic cotton clothing sheds cellulose fibers that decompose instead of accumulating in waterways.