1. 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 of the 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 the water reservoir promotes health and is easy to clean. 2. PREMIUM QUALITY - The whole hydration bladder is made of material. Our water reservoir is taste free and food grade. This is tested to comply with safety standards. It does not leave a taste in your drink. The 2l water bladder passed pneumatic pressure test and is pressure-tolerant. Double sealing side technique has improved durability of the hydration pack bladder. 3. REMAIN HYDRATED - This 2L hydration bladder can withstand temperatures from 20 to 50 degrees Celsius. The tube resists temperature changes in hot and cold weathers. The water bladder, with dimensions L 14.2Inch x W 6.8Inch, is compatible with most hydration packs. The tube, 0.4Inch in diameter and 40Inch long, provides a flow for easy drinking, helping you stay hydrated when camping, biking, cycling, hiking, or running! 4. WELL-SEALING WATER BLADDER - You will not be slowed down with our flow bite-valve. Simply bite the mouthpiece to suck water. The soft mouthpiece has an easily accessible ON/OFF valve and a cover to keep dirt out. Conveniently control the water flow by biting. The quick-release tube is detachable. When the tube is removed, the connector automatically shuts off and the hydration bladder will stay filled. It can be stored neatly in the fridge/icebox without tangling the hose. 5. Capacity: 2L 6. Colour: Green 7. Material: EVA 8. Package Contents: 1 * water bladder 9. Only the above package content is included; other products are not included. 10. Note: Light reflection and different displays may cause the color of the item in the picture to differ slightly from the real thing. The measurement allowed error is +/- 1-3cm.