Gregory Hydro 2L ReservoirA simple way to never be without water, the Hydro 2L Reservoir takes the struggle out of using a hydration reservoir. Simply unscrew the leak proof cap, just like your favorite water bottle, and easily fill with water thanks to the EasyGrip handle. The SpeedClip backpack connection allows you to secure it into your pack with one hand, and the included magnetic bite valve keeps access to water conveniently on your packs sternum strap. Easy Fill Handle