The Chappie Recycled 1/4 zip is made from our proprietary forty-singles blend of Organic Peruvian Pima Cotton RadCycled polyester and stretch yarns. Our breathable, hypoallergenic, non-GMO, ELS Pima (extra-long staple) cotton, the smoothest in the world, is also the purest of cellulose fibers, and like all cellulose fibers, are biodegradable. The certified REPREVE recycled polyester is spun from ocean plastic.