MARCHWAY Tactical MOLLE Hydration Pack Backpack with 3L TPU Water Bladder Coyote NWOT, washed but never used 19.7”x8.7”x2.6” Heavy duty 1000 Denier water repellent nylon. 1 main pocket fits up to 3L water reservoir with either large or small opening. 2 external pockets for storing personal belongings wallet, gadget, towel, phone, keys. Professional 3L Hydration Bladder: Made of 100% BPA free, tasteless TPU. Quick release valve allows you to refill water without connecting hose. Large opening is easy to clean and add ice cube. 360 degrees rotatable mouthpiece allows for easy drinking. Shut On/Off valve helps to adjust water flow. Middle baffle keeps the bladder flat and makes it easier to place into the backpack.