The most compact in the Viper series, the Viper 5 is the most useful for short and fast mountain bike rides and is also an ideal hydration pack for fun trail runs and day hikes. Includes a 2 liter Hydraulics Reservoir.
The Viper series delivers the outstanding functionality of Osprey's Hydraulics Reservoir in a versatile, light, high-performance package. Upgrades to the line for 2013 include a front shove-it pocket that increases the range of use for the packs and fresh vibrant colors and styling. Distinct sizing and design ensures that the Viper will provide optimal fit and performance for any activity.