PREMIUM QUALITY Hydration bladder replacement is made of premium TPU material. Water bag is taste free, and BPA free. Our hydration packs passed the pneumatic pressure test, 24-hour swing test and 24-hour vibration test. It is completely pressure-tolerant and leak proof for carefree biking, running, hiking and other outdoor adventures! LARGE OPENING & ATTACHED HEAD PULLER Big opening on the top (5 inches) is perfect for filling camel bag with water, ice cubes, different sports drinks and it makes cleaning and drying super easy. For cold water, simply add ice cubes directly from a scoop or refrigerator ice dispenser. Backpack water bladder has head puller attached to the bladder, so you will never have to worry about losing or misplacing it. QUICK RELEASE TUBE WITH SHUTOFF VALVE Our hydration bladder military has quick release auto-lock system that prevents leaking when the tube is detached and allows the tube to be easily disconnected from Hydration reservoir for filling, cleaning, and storage. Soft bite mouthpiece with pull-out shutoff valve provides fast water flow. STAY LIGHT & BALANCED WHILE ON THE MOVE No more water bottles! Lightweight, hands-free water storage bladder bag improves balance with center baffle for a hydration pack bladder. Slim profile hydration water bladder loads quickly into your hiking or camping backpack. Cleaning Instructions: Any plastic liquid holders (bladders, bottles etc) can taste "plastic" on first use. Our bladders are BPA and BPS free and 100% safe and the "plastic" taste is not harmful. To remove the taste, you need to thoroughly clean the bladder before 1st use. Fill it with warm soapy water mixed with a tablespoon of bicarbonate of soda and lemon juice and leave to soak for a minimum 30-60 minutes. Then rinse, rinse and rinse again and you are then good to go If you search, then it is a very common theme with plastic water holders but simple to resolve and certainly not harmful in any way - ensure you clean it & wash it & maintain it. 3L Green with neoprene hose cover 2L Blue 2L Green