A. OPENING FOR EASY CLEANING - 2l hydration bladder has one opening, and the big opening makes for easy pouring of water. It is also fairly wide for a hand or bottle brush to easily access 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. B. PREMIUM QUALITY - The whole hydration bladder is made of material. Our water reservoir is taste free, food grade. This is tested to comply with safety standards. It does not leave a taste in your drink. The water bladder 2l passed pneumatic pressure test, it is pressure-tolerant. Double sealing side technique has greatly improved durability of hydration pack bladder. C. REMAIN 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 flow for easy drinking, keeping you hydrated when Camping, biking, cycling, hiking, or running! D. WELL-SEALING WATER BLADDER - You will not 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 connector automatically shuts off and the hydration bladder will stay filled. Store neatly in fridge/icebox without tangling hose. E. Capacity: 2L F. Colour: Green G. Material: EVA H. Package Contents: 1 * water bladder. Only the above package content, other products are not included. I. 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.