100% Leakproof ▶ Upgraded 135°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 2 liter water reservoir will stay filled non-leaking.Upgraded PEVA Material ▶ Hydration bladder is manufactured of premium PEVA pressure-tolerant and wear-proof. It is non-chlorinated, 100% odorless, no plastic taste, safe for drinking. The smoothness of the liner prevents the lime from adhension, which promotes your health.Easy to Drink ▶ You won't be slowed down with our high flow bite-valve. Simply bite the mouthpiece to suck water. Pull to drink and push back to lock. It also has a dust proof cover to keep it clean. It conveniently quick and easy to have a drink in hiking, biking, cycling, climbing, backpacking, hunting, running, camping, and all outdoor sports.Remain Pefectly Hydrated ▶ This hydration pack bladder can withstand temperatures from -20 to 50 degrees celsius. The tube resists temperature changes in hot and cold weathers. L 38 x W 17 CM/15'' x 6.7''. Water bladder is compatible with most hydration packs. The tube (1CM/ 0.4'' diameter, 105 CM/41'' long) provides a wholesome flow for easy drinking, keeping you hydrated.You'll Absolutely Love This ▶ If there is a leak, or bad taste, or any other reason why you' re not 100% happy with this hydration pack replacement, simply send it back for a full refund or to get a new replacement. No questions asked!