Features: Constructed by waterproof 900D high density Nylon material. Two layers cargo design, one for hydration bladder, and the other for extra carrying purpose. Adjustable shoulder strap and chest belt, suitable for heavy carrying. Equipped with a tube with a bite valve to drink, so you don't need to hold it to drink. A switch on/off bite valve, convenient for control the flow of water. No Taste, No Virulent. Neoprene tube cover keeps water cool for hours. Bite Valve Cover keeps Bite Valve clean from dirt. Perfect to use when hiking, climbing, riding and other outdoor actives. Specifications: Hydration Bladder Capacity: 3L Material: Nylon + TPU Color: Army green Size: Approx. 18.5"x 7" ( L x W) Tube Length: Approx. 38.58" Weight: Approx. 0.2kg Package Included: 1 x 3L Water Bladder Bag