Osprey Seral 4 Lumbar Hydration Pack - Black

OSPREY SERAL 4 LUMBAR HYDRATION PACK

For riders seeking a low-profile hydration solution without a full backpack, the Osprey Seral 4 is the perfect lumbar pack. Designed for stability, comfort, and efficient hydration, it includes the next-gen 1.5L Hydraulics™ reservoir with a magnetic bite valve for effortless access on rough terrain. With 4 litres of storage, it’s ideal for essentials like a spare tube, CO2, multi-tool, and snacks—everything you need for short to medium rides.

KEY FEATURES

• AirScape™ lumbar backpanel with contoured lumbar wrap for maximum stability and comfort
• Dedicated hydration compartment with included 1.5L Hydraulics™ LT Lumbar Reservoir
• Magnetic hipbelt bite valve attachment for secure and easy access
• Zippered main compartment with internal tool organization and secure pocket
• Airmesh wrap hipbelt with zippered fabric pockets for quick access to essentials
• ErgoPull waist strap closure for a snug, stable fit
• Blinker light attachment with reflective graphics for visibility
• Sustainable design:
  • bluesign® approved and GRS-certified recycled fabrics
  • PFAS-free DWR treatments
  • BPA-free reservoir

SPECIFICATIONS

• Volume: 244 in³ / 4L
• Dimensions: 19H X 32W X 11.5D cm
• Weight: KG
• Fabric:
  • Main: bluesign® approved 100% recycled 600D PET packcloth
  • Bottom: bluesign® approved 100% recycled 400D high-tenacity nylon

Whether you’re charging through trails or taking on an all-day adventure, the Osprey Seral 4 Lumbar Hydration Pack ensures hydration and essentials are always within reach—all while keeping your back cool and unburdened.