1. Large capacity: the size of the main body of the hydration bladder is 40 x 17 cm, and the soft tube is 100 cm long, so you can drink directly from the backpack. The hydration bladder can be disassembled in the middle to fit in the backpack. This 2 litre hydration bladder is compatible with most hydration backpacks. 2. Safe Material Our water bladder is made of a high quality and flexible antibacterial material. This makes it a reliable and trusted choice for transporting water and other beverages. Suitable for care hiking, running, cycling, camping or other outdoor adventures. 3. INSULATED HOSE With the automatic on/off setting, you can drink water very conveniently without using your hands. The 100 cm removable hose and soft mouthpiece guarantee easy and comfortable use to absorb enough liquid during your activity. 4. LEAKPROOF DURABLE The upgraded soft water bottle spout with an easy to open and close valve prevents leakage. The water flow can be easily controlled by biting and water will not leak if it does not bite. It saves water and protects the backpack from accidents.