Polyester is the refined sugar of our wardrobes: It’s cheap, has an iffy reputation and is in almost everything, from stretchy leggings to $4,000 jackets. An estimated 34 million tons of it went ...

You see, polyester is the exact same as PET plastic used in water bottles, just in a different shape (threads instead of a bottle). Mechanically recycling PET—melting it down and re-extruding it ...

Polyester workout wear is light, comfortable and dries quickly. But it's notorious for getting rank and staying that way. Internet message boards are awash with advice on how to de-stink gym ...

Zara-owner Inditex , the world's biggest clothing retailer, has agreed to buy recycled polyester from a U.S. start-up as it aims for 25% of its fibers to come from "next-generation" materials by 2030.