Osprey Seral 4

• LUMBAR CARRY: For riders who require hydration or gear storage while riding, but prefer the off-the-back carry and minimalism provided by lumbar packs.
  
• RIDE STABILITY: Our bike-specific, angled hipbelt and compression straps provide stability and comfort by keeping the pack close to your body. This is created by a breathable airmesh wrap hipbelt that contours over the hipbone, Osprey's ErgoPull cross-body waist strap closure system that pulls the pack into the lumbar and side compression straps that pull the load close to your body, providing the most comfortable, secure and stable carry.
  
• INCLUDED RESERVOIR: A dedicated hydration compartment stores an included 1.5 L lumbar reservoir for short to medium rides and compresses for stable carry, while the hose magnet attaches to the bite valve for easy access while riding.
  
• SUSTAINABLE MATERIALS: Constructed with PFC-free recycled bluesign®-approved nylon; a sustainable build that's tough and durable to endure years of riding.
• AirScape backpanel with contouring lumbar wrap provides maximum stability
  
• Included Osprey Hydraulics 1.5 L lumbar reservoir by Hydrapak
  
• Magnetic hipbelt bite valve attachment
  
• Large zippered main compartment with reservoir sleeve
  
• Main compartment tool organization and internal zippered pocket
  
• Blinker light attachment with reflective graphic
• 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

Capacity & Weight

Fabric:
MAIN: bluesign®-approved recycled 600D PET polyester, PFC-free DWR
ACCENT: bluesign®-approved recycled 400D high-tenacity nylon, PFC-free DWR
BOTTOM: bluesign®-approved recycled 400D high-tenacity nylon, PFC-free DWR