Hydration Pack 26L Water Rucksack Backpack Bladder Bag Cycling Bicycle Bike/Hiking Climbing Pouch tough military Style w/ 2L bladder TPU water bag 2-Liter Cyclone bladder included Expandable quick stash mesh front pocket with quick release buckle Two front zipper pockets for additional accessories Four compression straps to stabilize load Articulated cool mesh padded shoulder straps