Tactical Hydration Backpack w/ 3Liter Bladder Stand United Tactical Multicam Compact Modular Hydration Backpack. DOES NOT INCLUDE WATER BLADDER Includes: One Large Main Compartment. One Outside Pocket With Inside Mesh Accessory Pockets. Hydration Pocket With Velcro Closure And Carrying Handle; Rugged Tactical Polyester. Modular Attachment Points On Front Face. Expandable Design And Stay-Cool Mesh Backing. Fully Adjustable Shoulder Straps. Heavy Duty Zippers And Hardware. Fully Expandable. Size: 17