CHERAINTI hydration bladder is an ingenious way for you to stay hydrated during outdoor activities. The convenient drinking tool consists of flexible water reservoir, tube and bite valve. Compared to traditional water bottles, it has superior features such as convenience, large capacity, hands-free operation, and balanced weight distribution. Suitable for runners, athletes, travelers, outdoor enthusiasts, or for daily use. The water bladder is made entirely of food-grade materials, keeping the water safe for drinking. The 2 liter hydration reservoir has double sealing lines. It is rigorously pressure-tested and has excellent leak-proof performance. The quick-release tube can be easily disconnected from the hydration reservoir for convenient filling, refilling, cleaning and storing. The tube connector is equipped with an automatic lock mechanism. The hydration bladder features a screw cap with a grab handle, allowing for easy filling, refilling, and adding of ice cubes. The screw cap closure ensures a water-tight and leak-proof seal. We provide 2 drinking tubes, 45-degree and 180-degree bite valve. 2 tubes allows you to choose the suitable one according to different outdoor activities or personal preferences, ensuring you maintain good hydration and smooth activities. The carefully designed mouthpiece allows you to easily drink a substantial amount of water. The water bladder switch features a push/pull design, allowing you to use your teeth to pull for drinking and push to close. Even if you forget to switch it to the "off" position, the shut-off valve automatically seals and prevents leakage. The dust cover effectively prevents dust, dirt, and other pollutants from entering the bite valve, ensuring the hygiene and safety of drinking water. Our flexible water reservoir compatible with most hydration packs and backpacks. Perfect for hiking, camping, running, cycling, biking, climbing, skiing, and other outdoor sports.