Osprey Viper 9L Hydration Pack



Item #: 331963501

Stay hydrated throughout your next adventure with the Osprey Viper 9-Pack.  This low-profile pack is designed for bikers to be comfortable, slim, yet still large enough to accommodate plenty of water. The LidLock™ clip easily attaches to a helmet while the blinker light attachment and reflective graphic increase safety while riding. Organizational pockets and valuable storage space finish off the design of this pack.

NOTE: Find in Store Inventory levels are continuously changing. Please contact store to confirm availability is as shown.


  • AirScape™ back panel with perforated foam provides lasting comfort
  • Ventilated harness offers lightweight breathability
  • Hipbelt offers a secure fit
  • Hydration sleeve with direct access for convenience
  • Versatile front shove-it pocket provides convenient storage
  • LidLock™ clip for added convenience
  • Main compartment with sleeve for pumps
  • Top zip access sunglass pocket with padding for added protection
  • Blinker light attachment and reflective graphics for added safety
  • Magnetic sternum buckle for quick access to bite valve for convenience


  • 210D Polyester Triple Diamond Ripstop / 600D Polyester
  • Reservoir: 2.5 L Hydraulics™

Shipping Info:

  • Leaves the warehouse in 1-7 business days depending on order volume.
  • Items may be returned within 60 days of the order date to an Atmosphere retail store or an Atmosphere warehouse. Items must be returned unused/unworn and electronics unopened. See Online Return Policy and Return Instructions for more information.
  • Note: Shipping restrictions may apply based on location and product size.


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