Osprey Seral 4 with Reservoir

For 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-the-back hydration carry and the minimalism provided by a lumbar pack.

•RIDE STABILITY
Our bike-specific, angled hipbelt and compression straps provide stability and comfort with a close-to-body fit.

•RESERVOIR INCLUDED
A dedicated hydration compartment stores an included Hydraulics™ LT 1.5 L Lumbar Reservoir for short to medium rides and compresses for stable carry.

•SUSTAINABLE DESIGN
+ bluesign® approved main body and bottom fabrics + GRS-certified 100% recycled main body and bottom fabrics + All DWR treatments made without PFAS + BPA-free reservoir

FEATURES:

•AirScape backpanel with contouring lumbar wrap provides maximum stability
•Large zippered main compartment with reservoir sleeve
•Included Osprey Hydraulics 1.5 L Lumbar •Reservoir with strong magnetic hipbelt bite valve attachment.
•Main compartment tool organization and internal zippered pocket
•Blinker light attachment with reflective graphic