Osprey Seral 4 Lumbar Pack - One Size Postal Blue Model=Flip Pin Set – High dirt repellence

– High dirt repellence

75Diameter 7

and our testing cofirms that the performance is outstanding

Hole/Thread 14mm 3/8 adaptor included Material 7075-T6 Aluminum Peg Axle Diameter 38mm Peg Length 122mm Primary Color Black Size 4

The Utility Pro sprocket is 7075-T6 aluminum and comes with a replaceable and removable proprietary plastic guard

Osprey Seral 4 Lumbar Pack - One Size Postal Blue Model=Flip Pin Set – High dirt repellenceThe 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