LKOUS Multicolor 3L Hydration Packs Tactical Water Bag Assault Backpack Hiking Pouch Multicolor 3L Hydration Packs Tactical Water Bag Assault Backpack Hiking Pouch Durable nylon backpack suitable for anything from an intense hiking session to a leisurely camping trip Adjustable shoulder straps and chest belt relieve pressure on shoulders while carrying 3L TPU material Hydration Bladder and bite valve Comes with bite Valve Cover to keep Bite Valve clean from dirt