Super affordable package - Place an order, you can get 2 water Bladder. Package contains: 2 piece ArmyGreen hydration bladder . PREMIUM QUALITY - Hydration bladder is made of thick premium quality flexible material.. Our water bladders passed pneumatic pressure test, It is completely pressure-tolerant and leak proof for carefree biking, running, hiking and other outdoor adventures! QUICK RELEASE TUBE WITH SHUTOFF VALVE - Our bladder system has quick release auto-lock system that prevents leaking when tube is detached and allows the tube to be easily disconnected from water reservoir for filling, cleaning and storage. A PERFECT MOUTHPIECE C You won't be slowed down with our high flow bite-valve. Simply bite the mouthpiece to suck water. Soft mouthpiece with easily accessible ON/OFF valve prevents leakage. It also has a cover to keep dirt out. Conveniently control the water flow by biting, when not bite, the water will not leak out. Quick-release tube is detachable. Auto shut off while the tube is removed, bladder will stay filled non-leaking. store neatly in fridge/icebox without tangling hose. LARGE OPENING & EASY TO CLEAN AND FILL: The big opening makes for easy pouring of water. It is also fairly wide for a hand or bottle brush easily access to the interior hydration bladder. The 4 screw on cap goes on and off easily. For cold water, simply add ice cubes directly from a scoop or refrigerator ice dispenser.