Large opening for easy cleaning and filling - Our water bags have one of the largest openings on the market. The large opening makes it easy to pour water out. It is also quite wide, allowing easy access to the inside of the water bag by hand or with a bottle brush. the 4 screw-on cap is easy to open and close. For cold water, simply add ice cubes directly from a spoon or refrigerator ice dispenser. The inside of the water bladder is smooth, promotes good health and is easy to clean. HIGH QUALITY - The entire water bladder is made of high quality materials. The water tank is odorless and it will not leave a bad taste in your drink. The water bladder passed the pneumatic pressure test and it is pressure resistant. Double seal side technology greatly improves durability. Probably the toughest water bladder on the market. Keeps plenty of water - This 2L water bladder can withstand temperatures from -20 to 50 degrees Celsius. The tube is resistant to temperature changes in hot and cold weather. The 14.2 long x 6.8 wide water bladder is compatible with most water bags. The tube (0.4 diameter, 40 long) provides a healthy stream of water for easy drinking, keeping you well hydrated while biking, riding, hiking or running. Well-sealed faucet - With our high-flow bite valve, you wont get bogged down. Simply bite down on the mouthpiece to wick away water. Soft mouthpiece with an easy-to-use on/off valve. It also has a lid to keep dust out. Convenient control of water flow through the bite. The quick release tube is removable. When the tube is removed, the fitting closes automatically and the water bladder stays filled. Can be stored neatly in the refrigerator/safe without tangling the hose.