Osprey Seral 4L Biking Waist Pack with Hydraulics Reservoir

Sale price$138.00
Only 1 unit left


The Osprey Seral is a slim waistpack with a 1.5-liter bladder equipped with Osprey's updated high-strength magnetic coupling for improved hose management even in rough terrain. It has enough storage for ride essentials, like tools and snacks, while staying more streamlined than a bulky backpack. Constructed with high-quality bluesign-approved recycled high-tenacity nylon with a PFC-free DWR coating, the Seral 4 is sustainable and built to last. With its slim design and next-gen reservoir, the Osprey Seral 4 waist pack is for riders looking to hit the trail with low-profile, integrated hydration while keeping snacks and a spare close at hand.


  • PFAS-free durable water repellent (DWR) finish
  • Includes an Osprey Hydraulics 1.5-liter lumbar reservoir with a strong, magnetic hip belt bite valve attachment.
  • Large zippered main compartment with internal reservoir sleeve, tool organization and zippered pocket
  • AirScape back panel with contouring lumbar wrap provides maximum stability
  • Blinker light attachment with reflective graphic (light not included)
  • Large zippered main compartment with reservoir sleeve and tool organization.
  • Osprey Hydraulics 1.5L lumbar reservoir included; built with Hydrapak for premium quality and with a magnetic hip belt bite valve attachment.
  • Internal zippered pocket tuck away your keys or other valuables here.
  • Reflective graphic improves visibility in low light conditions
  • AirScape lumbar backpanel extra thick ridged foam with a centre air channel for excellent ventilation and contouring lumbar wrap for maximum stability
  • Airmesh wrap hip belt provides premium stability and breathability
  • ErgoPull waist strap closure allows for a snug, stable fit.

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