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