For riders looking for a low-profile lumbar pack with integrated hydration, 4-litre Seral is the perfect trail companion. This slim waist pack features the next-gen 1.5-litre 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.
Features • AirScape backpanel with contouring lumbar wrap provides maximum stability • Large zippered main compartment with reservoir sleeve • Included Osprey Hydraulics 1.5L Lumbar Reservoir with strong magnetic hipbelt bite valve attachment • Main compartment tool organization and internal zippered pocket • Blinker light attachment with reflective graphic • 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 1.5L Lumbar Reservoir for short to medium rides and compresses for stable carry • 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 • AirScape™ Lumbar Backpanel: Extra-thick ridged foam with center air channel for excellent ventilation • Hipbelt: Airmesh wrap hipbelt with zippered fabric pockets provide stability and breathability, ErgoPull waist strap closure system allows for proper snug and stable fit
Materials • Main: bluesign® APPROVED 100% Recycled 600D PET packcloth, DWR treatments made without PFAS • Bottom: bluesign® APPROVED 100% Recycled 400D high-tenacity Nylon, DWR treatments made without PFAS