zeraca Hydration Pack Water Rucksack Backpack Fit Men and Women, Great for Hiking Climbing Running Biking nylon Capacity 10L, Approx Dimensions:17.3''x8.3''x1.2'' Storage: 1 Main compartment, 1 vice compartment, one front pocket with key clip clycling cap can bind to the outside of the package Multipurpose: Cycling, travelling, hiking, trekking, camping, running etc. Smart design: The padded sponge of the backpack offer you a good protection and can effectively reduce the burden ,makes your travel easier and more comfortable