Cotton / polyester. Small drawstring bag made from 67% recycled cotton / 30% recycled polyester / 3% other fibers (Black Night), 75% recycled cotton / 22% recycled polyester / 3% other fibers (Ecume, Horizon Blue), 75% recycled cotton / 20% recycled polyester / 5% other fibers (Flint Grey). Drawstring fastening with a thick cord. Available as a kid version (KI5103).