SAFETY FIRST- The entire water bladder is made of high quality TPU. TPU water bags are cleaner, softer and more cold-resistant than other materials. 100% odorless, BPA free. It wont leave a bad taste in your drink. 100% LEAK-PROOF DEVICE- The bite is equipped with an OFF/ON valve to control whether the water comes out, just bite the nozzle pipe to suck the water, through force of bite to control the size of the water flow. push for close. The spout has a cover to keep it clean. EASY CLEANING AND FILLING- Large opening for cleaning easily accessible interior surfaces easily for easy cleaning and drying. Easy to fill with water and add ice cubes. STRONG AND FLEXIBLE- Squeeze it, freeze it and fill it until the sides start to flex. This rugged pouch can withstand temperatures from -20C to 70C and evacuate up to 110 pounds of water pressure to that it holds up to conditions in a variety of situations. VERSATILITY- The 2L hydration water bladder, which can be compatible with most backpacks. Free your hands when drinking water and stay hydrated when camping, cycling, running, climbing, hiking, hunting and skiing and any other outdoor sport you enjoy.AODOOR 2L hydration pocket function: This 2 liter capacity hydration pack. Premium material with anti-leakage sealing technology. Safe and pure, very easy to clean. Easy to insert into the backpack system. Soft tip with on/off valve for maximum water flow. Lightweight design, easy to fold and carry. Convenient hydration pocket for any backpack. Ideal for all activities, such as cycling, running, hiking, walking and more. Soft mouthpiece with on/off valve for maximum water flow. Drinking from this bubble is almost as easy as taking a sip from a straw. Simply pull the cap off with the teeth, then push it down to seal the valve. Easy access on/off valve to prevent leaks. The dust cover keeps your car clean and safe. Note: They are offered to wash it after use, to maintain a fresh smell and prolong its life. Keep away from sharp objects to avoid cutting. Be sure to close the bubble opening tightly to avoid leakage after filling with water. Content: 1 water bladder of 2 l.