VEVOR Hydration Backpack, Water Backpack with 3L TPU Water 。Never been worn/used NEW!! - Brand new Fast shipping Color black Size: 2L-Bladder Weight: 0.57 Kilograms Nylon This hiking hydration backpack includes a 2-liter OR 3-liter water bladder made of BPA-free food-grade PEVA material, with a convenient hose clip The leak-proof bite valve ensures a strong seal, allowing for quick water flow without any drips This ultra-light 8.5 oz hydration backpack comes with a 2-liter OR 3-liter water bladder Made with waterproof and tear-resistant fabric, the PU-coated nylon backpack can carry up to 25 pounds