If you are looking for effective hydration bladder for hydration pack, notice our top grade water bladder, featuring advanced technology! Suction nozzle: Silicone gel Use Range: Biking, hiking, running, camping, and other sports. Easily accessible ON/OFF valve. Soft bite mouthpiece designed for easy sipping. Water pouch High-flow bite valve with dust cover. The tube size is good for providing a wholesome flow. It resists temperature changes in hot and cold weathers. Drinking tube is detachable for better storage. Water reservoir auto-shutoff valve. Premium material, non-toxic, BPA free, SGS certified. Taste free and will not leave a bad flavor in your drink. Smooth inside surface keeps filled water clean. Wide opening for easy filling, cleaning, draining, and ice insertion. Measuring scale helps you check on the amount on water left on it. Double soldering sealing side improves durablity. Pressure tolerant and does not wear out from active uses. Ergonomic, portable design. Get a free item and money back guarantee. Water bladder is compatible with most hydration pack Package contents: 1 x Hydration bladder Whether you are riding your bicycle, hiking up a mountain, or simply going for a stroll at your neighborhood park, this 2L hydration bladder water bag will help you have access to clear water and remain perfectly hydrated at all times!