Osprey Seral 4 Lumbar Pack - One Size, Black industry-nine in an optimal "comfort zone"

in an optimal "comfort zone" position for hours of rough riding over mixed terrain

Gusset keeps the family jewels nice and comfortable

and offers 80% more sidewall protection vs traditional single-ply tires

and electronic drivetrains

Osprey Seral 4 Lumbar Pack - One Size, Black industry-nine in an optimal "comfort zone"The Osprey Seral lumbar pack is perfect for the minimalist looking for something other than a traditional over the shoulder pack. The Seral features a dedicated hydration compartment that stores an included 1. 5L lumbar reservoir and compresses for stable carry. Dedicated hose magnet attaches the bite valve for easy access. Easily accessible zippered main compartment with internal tool organization Dual zippered hip belt pockets Front panel bungee