Description: Breathable 3D stereoscopic suspension system , side pocket for water bottles Double zipper, survival whistle on the strap buckle , high coefficient reflective tape Mesh front pocket design for helmet and shoes, 2 pockets inside, larger capacity Breathable mesh sponge strap, release your loading on shouler and waist Waterproof cover on the bottom, suitable for outdoor cycling, hiking, travel, etc Specification: Material: Neoprene Size(LxW): approx. 47x33cm/18.5x12.9inch Color: Blue Package Includes: 1x Backpack