KUREIDA is a hydration expert for outdoor sports. We have 12 years of factory production experiences and strict product quality control, promoting our products from factory to the consumer terminal directly, so that customers who buy products enjoy the best product quality and price. Choose KUREIDA, choose profession and trust. ?Package contents? 1 x Hydration bladder 1 x Quick release tube with shutoff valve 1 x sport cool towel ?Use Range? Biking, hiking, running, kayaking, climbing, camping, and other outdoor sports. ?Instruction to use? (1)Open the cap and Inject water into bladder (2)Screw the cap to close (3)Install the tube onto the connector valve of bladder (4)Double check the seal before putting it into backpack ?Important Notice? (1) The temperature of the water should be between -20 and 50 degree Celsius.Hydration Bladder cannot hold juice,milk,soft drink,liquor, etc. (2) Please soak the bladder for one hour in the warm salt water about 30-40 degree Celsius and then clean it before using.(The salt concentration should be controlled at about 7%.) (3) Clean with a mild detergent and rinse the reservoir thoroughly. Make sure it is completely dry, inside and outside, before storing. (4) Avoid contact with extreme heat/cold, harsh chemicals, UV light, these elements will damage the reservoir. (5) Keep the bladder away from sharp objects to avoid puncture. (6) Caution: Don't over tighten the cap in case it gets hard to open. (7)To maintain its best status, we suggest you to replace the bladder every 6 months. GET A FREE GIFT AND FIRST-CLASS AFTER-SALES SERVICE?Upon placing your order, you will get a sport cool towel at no additional charge. If you are not absolutely happy with your purchase of the hydration bladder for any reason, simply send it back to get a new replacement. We believe that our after-sales service will properly handle for you until you are satisfied. Choose KUREIDA, choose profession and trust. THEME-DESIGN WATER BLADDERS FOR BACKPACKS?KUREIDA “ youth has no age” theme-design 2L water reservoir is the most unique design among the products in water bladder market. It is the best gift for yourself and friends who love outdoor sports. This 2L water reservoir can withstand temperatures from -20 to 50 degrees Celsius. L 14.2'' x W 6.8'' hydration bladder is compatible with most hydration backpacks. The tube (0.4”diameter, 40” long) provides a wholesome flow for easy drinking. 100% LEAK PROOF?Soft mouthpiece with easily accessible ON/OFF valve prevents leakage. Conveniently control the water flow by biting, when not bite, the water will not leak out. Quick-release tube is detachable. Auto shut off while the tube is removed, the hydration bladder will stay filled non-leaking, store neatly in fridge/icebox without tangling hose. LARGE OPENING FOR EASY CLEANING AND FILLIN?KUREIDA hydration bladder has one of the largest opening on the market. 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 hydration bladder. The3.5” 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?All parts of the KUREIDA hydration bladder are made of premium material . KUREIDA water reservoir is taste free, BPA free. It won’t leave a bad taste in your drink. The water bladder passed pneumatic pressure test, it is pressure-tolerant. Double sealing side technique has greatly improved durability. Might be the most rigid hydration bladder on the market.