Features Professional military Bladder Bag Eco-friendly TPU material100% odorless tasteless BPA- Free material FDA APPROVED: Food-grade premium quality anti-bacterial materials. Thick TPU bladder material is pressure-tolerant and wear-proof 3.54-inch openings. Large opening for easy cleaning and easily adding water and ice Strong elasticity not damaged When filled with water can withstand squeezing. Can withstand the water temperature range: -20 to 50 degree Celsius Two Holes to hang up on your pack's bladder compartment keep it standing upright. High-flow bite valve with dust cover mouthpiece made from food grade soft silicone with a valve switch to prevent leakage Durable and soft anti-microbial mouthpiece for wholesome and effortless sipping Thermal tape at each end prevents insulation from sliding and wearing off. SCREW-CAP WITH HANDLE- Tight seal and durable constructed easy to fill water and add ice cubes Perfect to use when hiking climbing riding and other outdoor activities. Colour: Army Green Capacity: 2 Liter Size: 180mm390mm 2.5 Liter Size: 188mm470mm 3 Liter Size: 188520mm PVC Suction pipe: Length 1 meter Mouth diameter: 100mm Very easy to use: Mouthpiece with a valve switch to prevent leakage. Just pull out the water PVC pipe unplug the cap then gently bite the mouthpiece of the pipe and there will be fresh water injected to your mouth. Large opening for easy cleaning of inner surfaces easy to fill water and ice. Use Range: Bike trips camping hiking Running and other outdoor sports. Notes: Adding water between -20°C to 50°C no soda wine or milk. The hydration Bladder cannot hold juice milk soft drink liquor etc. Please soak the bladder for one hour in warm salt water about 30-40 degree Celsius and then clean it before using. The salt concentration should be controlled at about 7%. Clean with a mild detergent and rinse the reservoir thoroughly. Make sure it is completely dry inside and outside before storing. Please allow a 1-3 cm difference due to manual measurements. Please note that slight colour differences should be acceptable due to the light and screen. Package 1 x Hydration System Water Bag