Hike into the backcountry knowing you'll have plenty of water with the Osprey Hydraulics 3L Reservoir. Fashioned together with a Hydrostatic Backerplate, this bladder remains flat against the back evenly distributing weight. A magnetic bite valve clip and Hydrapak® Blaster bite valve make staying hydrated a simple task, allowing you to sip without removing your pack. With the Slide-Seal top opening and pour shield technologies, fill this bladder up with water for the long haul.