Osprey Seral 4 with Reservoir Size:O/S If you want to fly

If you want to fly through the backcountry on winged feet

Bottom opening: 13 1/4”

•YKK Zipper

5 in / 24 cm x 17 in / 43 cm

Osprey Seral 4 with Reservoir Size:O/S If you want to flyFor riders looking for a low profile lumbar pack with integrated hydration, 4 liter Seral is the perfect trail companion. This slim waist pack features the next gen 1. 5 liter Hydraulics reservoir with high strength magnetic coupling for improved hose management even in rough terrain and enough storage capacity for ride essentials, such as a spare tube, CO2 and multi tool and, of course, snacks. KEY ATTRIBUTES: LUMBAR CARRY For riders who prefer off