The Tanklock system eliminates the need for straps and magnets; securing the bag to the flange mounted to the fuel cap for a quick and easy installation.; IPX5 waterproof certification Reflective print for improved visibility Transparent upper pocket for maps or smart phones Water resistant zip closure with waterproof cover Internal reinforcements for greater support Anti-slip base Includes an adjustable shoulder strap, handle for easy transportation off the bike 20 liter capacity Dimensions: 13.8" L x 9.8" W x 8.3" H