Sportsun Hydration Backpack for Running Hiking Cycling Climbing, with 2L TPU Hydration Bladder, Black color Extremely durable and high-quality material for long hikes and other outdoor activities Designed with two storage compartments for 2L hydration bladder and side pockets for small accessories A suction pipe and valve enable drinking without taking the back off the hydro backpack Very comfortable mesh straps allow durability even with higher weights on the shoulders 2L food grade bladder with large water cover for never running out of water