LARGE OPENING FOR EASY CLEANING - 2l hydration bladder has one of large opening, and 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 water bladder for hiking backpack. The screw on cap goes on and off easily. For cold water, simply add ice-cubes directly from a scoop or refrigerator ice dispenser. The smooth inner of water reservoir promotes health and is easy to clean. PREMIUM QUALITY - The whole hydration bladder is made of premium material. our water reservoir is taste free, food grade. This tested to comply with standards. It 't leave a in your drink. The water bladder 2l passed pneumatic pressure test, it is pressure-tolerant. Double sealing side technique has greatly improved durability hydration pack bladder. REMAIN PEFECTLY HYDRATED - This hydration bladder 2L can withstand temperatures from 20 to 50 degrees Celsius. The tube resists temperature changes in hot and cold weathers. L 14.2Inch x W 6.8Inch water bladder is compatible with most hydration pack. The tube, 0.4Inch diameter and 40Inch long, provides a wholesome flow for easy drinking, keeping you hydrated when Camping, biking, cycling, hiking, or running! WELL-SEALING WATER BLADDER - You '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. It also has a cover to keep dirt out. Conveniently control the water flow by biting. Quick-release tube is detachable. While the tube is removed, the connnector automatically shut off and the hydration bladder stay filled. Store neatly in fridge/icebox without tangling hose. Capacity:2L Colour:Green Material:EVA Package Contents: 1 * water bladder Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.