Recycled Polyester vs Organic Cotton: Which Actually Wins in 2026? By Chester Takau · July 2026 Recycled polyester diverts plastic bottles from landfill and holds up better under repeated washing, but a December 2025 study found it sheds roughly 55% more microplastic fiber per wash than virgin polyester — and the particles are smaller, so they disperse further. Organic cotton sheds no microplastic at all and breaks down naturally at the end of its life, but it takes more land and water to grow than the recycled-plastic alternative. Neither material is the clean winner the marketing on either side suggests. Which one is actually the better call depends on what you're making and where it ends up — a backpack shell, a base layer, or a pair of everyday joggers each point a different direction. The Short Version Recycled polyester (rPET) is almost always made from plastic bottles, not old clothes — about 98% of it, per Textile Exchange's 2025 market data — and a new...