The Viper has your back.
Whether it''s an epic relay race, stiff hiking trail, or challenging cross country ride, trust Osprey''s Viper 9 Hydration Pack to satiate your thirst-quenching needs. The ventilated Airscape back panel and perforated Biostretch harness not only keep the pack from shifting around during fast-paced pursuits, but it also maintains comfort even when you break a sweat. Additionally, the three-liter Hydraulics Reservoir is shaped to match the contour of the back panel?which means better balance and less sloshing. And to ensure maximum preparation for bike-related break downs or unexpected detours on your hike, Osprey added a large zippered main compartment (in addition to the hydration sleeve) where food, layers, spare tubes, and tools can be carried while the two front pockets make it easy to stash a light rain jacket or trail map for quick access.
Airscape back panel
Biostretch shoulder harness
Atilon foam frame sheet
Zippered panel access
Removable waist belt
2.5-liter Hydraulics reservoir included
Lidlock helmet attachment system
Front Shove-it pocket
Zippered front pocket
Stretch mesh shoulder strap pocket
Scratch-free sunglasses pocket
Item #OSP005N

Material[main] 210D polyester, [accent, bottom] 420D nylon packcloth
Volume9L (549cu in)
Support/SuspensionAtilon foam
Shoulder Strapspadded
Waist Beltyes
Hydration Compatibleyes
Reservoir Includedyes, 2.5L
Accessfront panel
Pockets1 zippered stash, 1 shove-it, 1 shoulder strap
Helmet Carryyes
Compressionyes
Dimensions18 x 9 x 7 in
Claimed Weight1 lb 3 oz
Recommended Usemountain biking, hiking
Manufacturer Warrantylifetime