Ultimate Direction 20-Ounce Fastdraw Plus Hand-Held Bottle 20oz/.6L Botttle Included Weight 4.25oz/120g Storage: Larger zipper stash compartment for keys, cash or gel Comfort: Narrower tension-lock hand strap with reflective webbing Materials: 3D AirMesh, 300D Polyester Baby Ripstop, Nylon Mesh