BPA Free Water Bladder Our bladder bag is sufficiently pressure tolerant and not easy to break. This 2L water bladder can withstand hot and cold environments with a temperature of -20 to 50 degrees C. The tube withstands temperature changes in hot and cold sleeves. 2 L Water tank The 2L hydration bladder has a large opening to fill easily, where you can also add ice cubes. The large opening allows you to reach all corners of the interior and clean up stains effortlessly. The 91cm long tube, can straight out of your backpack. Waterproof Military Water Tank Simply put down the mouthpiece to suck the water out. Pull to drink and push back to lock. It also has a dust cover to keep it clean. The tail release tube is detachable, easy to store and keep water fresh and cool. Wide application 2L water tank for hydration Pack, can hold more water, ideal for activities Glows easy and easy to drink hiking, biking, cycling, rock climbing, backpacking, hunting, running, camping and all outdoor sports. Please note that you do not worry about the quality and safe to buy. 24 Hour Customer Service We want all of our customers to be happy and satisfied. If any doubt, don't hesitate to contact us.