Aircee Military Cycling Running Hiking Water Bag Pack Army Hydration Bladder Pouch Reservoir Food-grade premium quality anti-bacteria materials. High quality TPU material Bladder,TPU material tubes,Featured with a tube cover (tube warmer) Unique Shape with a caved line makes water more flat in the bag. Easy to pack. Easy to use. it can be used individually as a water bag, or put into pockets, backpacks or briefcases.Can be used to store water with -20 to 50 degree celsius. Large Opening for easy cleaning. Mouthpiece is 360 degree rotatable. Tube quick disconnect Feature, special shutoff valve design, water will not leak even taking off the tube. 2 Liter Volumn, Size:35x21cm(13.78x8.27inch). 2.5 Liter Volumn, Size:35x21cm(13.78x8.27inch). 3 Liter Volumn, Size:35x21cm(13.78x8.27inch).Package Content: 1 x Water Bag