Osprey Viper 5

Retailers' Descriptions

Here's what other sites are saying:

When all you need for a morning on the trails is a few small snacks and plenty of water, shoulder the Osprey Viper 5 Hydration Pack before heading out the door. The two-liter Hydraulics Reservoir is contoured to match the profile of the AirScape back panel for improved balance and less sloshing while the well-ventilated BioStretch harness ensures you stay comfy after breaking a sweat.

- Backcountry.com

The compact Osprey Viper 5 hydration pack is built for short and fast mountain bike rides, offering a low-profile design and a 2 liter hydration capacity to quench your thirst as you rail trails.


The most compact in the Viper series, the Viper 5 from Osprey 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.

- CampSaver.com

A great all-around mountain biking, trail running, and day hiking pack, the Osprey Viper 5 hydration pack keeps you well-hydrated and offers just enough room for the essentials.


Free Shipping. Osprey Viper 5 Pack FEATURES of the Osprey Viper 5 Pack Top zip-access sunglass pocket with protective embossed fabric Main compartment with sleeves for bike tools Unique hydration sleeve design with direct-access zip for fast loading LidLock clip quickly secures helmet Versatile front shove-it pocket for quickly stashing extra gear Blinker light attachment patch and reflective graphics for safety Ventilated harness is light and breathable Magnetic sternum buckle for quick access to the reservoir bite valve AirScape backpanel with perforated foam provides cushion and ventilation 20mm webbing hipbelt keeps packs stable 2L Hydraulics Reservoir included Mesh Backpanel Creates a lightweight, yet supportive and ventilated backpanel Bio stretch Ventilated Harness Sternum strap with magnetic hose attachment EVA foam is perforated with large holes for enhanced breathability and comfortable stretch Breathable spacer mesh creates soft, irritation free contact surface Detachable Webbing Hipbelt Modified - Straight ErgoPull hipbelt closure SPECIFICATIONS of the Osprey Viper 5 Pack Weight: 1 lb / 0.45 kg Reservoir Weight: 11 oz / 0.31 kg Volume: 305 cubic inches / 5 liter 210D polyester triple diamond ripstop 600D polyester Dimension: (H x W x D): 20 x 9 x 6in. / 44 x 24 x 16 cm This product can only be shipped within the United States. Please don't hate us.

- Moosejaw