Osprey Viper 9 Hydration Pack: Wasbai Green, One Size

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Osprey’s Viper Hydration Pack is designed for cyclists who like to push the limits by packing full day rides into half that time and bringing just enough gear to make it home. Bike-friendly features include a Hydraulics LT 2.5 liter reservoir with magnetic bite valve retention, internal bike pump storage loops, and Osprey’s innovative LidLock helmet attachment system.

  • Dedicated zippered reservoir access make it easy to load and unload the included Hydraulics LT 2.5L reservoir
  • Lid-Lock attaches helmet securely to the outside of the pack
  • Foam framesheet spreads your load across a ventilated mesh back panel for all-day comfort
  • BioStretch shoulder harness provides a contoured fit
  • Access your gear in the main compartment via the zippered front panel
  • Small items slip into the dual side mesh or harness pockets
  • Scratch free zippered stash pocket for your shades
  • Front fabric shove-it pocket and zippered organizational pocket
  • Blinker light attachment
  • Removable webbing hipbelt


  • Color: Wasabi Green
  • Defined Color: Green
  • Number of Compartments: 4
  • Reservoir Included: Yes
  • Back Protection: No
  • Reservoir Volume (fl oz): 84

This product was added to our catalog on August 16, 2016.