Cotton / polyester. Flat shopping bag made of 67% recycled cotton / 30% recycled polyester / 3% other fibers (Black Night, Navy Blue, Pebble Grey), 75% recycled cotton / 22% recycled polyester/ 3% other fibers (Carbon, Ecume, Provence Lavender, Topaz Blue), 73.4% recycled cotton / 26.6% recycled polyester (Cactus Green). The handles are made from the same material as the rest of the bag.