A usable volume of 3 L and a 1 L water bladder: stay hydrated for 2 hours.
1 large pocket, 1 water bladder, 4 small inner pockets & 1 outer pocket
The straps are adjustable with their parachute-style bindings.
Back made of perforated foam & straps made with mesh for ventilation.
VIOO CLIP light attachment point on the back