The lobo is ideal for days when the weather is clear and the trail is callingdays when you want to ditch most of your gear to travel fast and light with 3 liters of hydration capacity it carries enough water for a substantial 3 hour ride and the external fill means you can top off the reservoir without unpacking anything pack only weight 480g 1 lb 0 oz torso fit range 43 53cm 17 21 in waist fit range 66 116cm 26 46 in fabric 100d robic nylon dobby 210d nylon oxford