Free 2L Water Bladder2L Water Bladder features "big-mouth" opening design, easily for filling in water and cleaning. There is a slider to keep it close and hang inside the backpack, easy to carry. | Leakage Proof DesignWith updated auto lock quick-connect design on the water bladder, you won’t be bothered by leakage problem. Even pull out the tube, the water will not come out. | Easy to UseThe mouth piece stays off status before use. When you want to drink water, just pull the black rubber part into opposite direction, water comes right out. And you can turn it off after use. | Compact and lightweightThe hydration pack is comfortable to wear and lightweight even when full. You don't have to carry a heavy bottle any more. Perfect for backpack, hiking, running, cycling, skiing and snowboarding. |