1.Safe and nontoxic: Our hydration bladder container is made of EVA material, which is from BPA and other harmful chemicals, ensuring the purity of your water supply. This material not only guarantees , but also provides exceptional durability, making it a reliable solution to your hydration needs. 2.Leakproof water pipe: the hydration bladder with a generous length of 104 cm, the water tube of our bladder has an antileak mechanism to protect your belongings from moisture. With a userfriendly switching valve, simply pull up the valve to drink water, and press down to seal it. In addition, the water pipe is equipped with dust caps that improve its ease of use for outdoor enthusiasts. 3.Ensured leakage protection: the soft mouthpiece is equipped with a practical on/off valve to prevent leaks. In addition, the insulated hose cover not only ensures the temperature of the water, but also provides a leakproof seal that keeps debris out. When disconnected, the shutoff valve automatically closes and prevents unwanted leaks. 4.Temperature resistance: Hydration bladder designed to endure extreme temperatures, our hydration bladder can withstand temperatures from 20°C to 50°C. Whether you are going through hot summers or cold winters, this bladder ensures that you stay hydrated and comfortable during your outdoor adventures.