Cotton/polyester. Black night colour 67% cotton / 20% polyester / 3% other fibers. Ecume color 75% cotton / 22% polyester / 3% other fibers. Backpack made of recycled cotton and recycled polyester. The handles in contrasting colours are stitched all along the body of the bag for a touch of originality and greater durability. The bag has an inner pocket with a zip fastening to safely store your keys and phone. Magnetic clasp.