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Retailers' Descriptions

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The Osprey Viper 9 offers a simple solution for riders looking to travel light while riding, with plenty of space for water in a light, versatile and high-performance package.


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.

- Backcountry.com

The Osprey Viper 9 Pack is a cycling pack for pedaling the miles with the necessities close by. It all begins with an Airscape backpanel for plenty of ventilation against the body and then Uses a Biostretch; harness for additional cushion against the shoulders. Comfortable carry of your stuff makes a world of difference when you're going on mile 20 into the ride. Then let's talk hydration, because working those tHighs will have you sweating up a storm and you'll need to get your hands-free drink on. This pack includes a Hydraulics; LT 2.5L reservoir, and the end of the hose Features a magnetic bite valve that connects to the sternum strap, so you know right where your drink is. When you're stopping off to rest or ready to hit up a restAurant for a meal, attach your helmet to the bag using the LidLock; system so you know where it is when it's time to go. Features of the Osprey Viper 9 Pack Upper side compression straps Direct access zip path to reservoir compartment Heat embossed scratch free zippered stash pocket Front fabric shove-it pocket with zippered organization pocket Lidlock helmet attachment Blinker light attachment Stretch mesh harness pocket Magnetic sternum strap bite valve attachment

- Moosejaw

Ospreya (TM)s Viper 9 is designed for cyclists who like to push the limitsa "packing full day rides into half that time and bringing just enough gear to make it home. . . . 210D Poly Honey Comb, 420HD Packcloth. . Atilon foam framesheet provides optimal mobility while evenly distributing load across entire backpanel. . Biostretcha" harness provides an active, contoured fit with optimal ventilation. . Mesh covered ridged foam Airscapea" backpanel delivers ventilation. . Removable 20mm webbing ride stabilizing hipbelt. . Dedicated hydration compartment with direct zip access. . Hydraulicsa" LT 2.5 liter reservoir with magnetic bite valve retention. . LidLocka" elasticized attachment system for easy helmet storage. . Blinker light attachment strap. . Stretch mesh harness pocket provides easy access to essentials. . Front zippered stash pocket with head embossed scratch-free lining. . Volume: 549 cu. in. (9L). . 18H x 9W x 7D in. total dimensions. . 1.21 lb. total weight. .


The Osprey Viper 9 Hydration Pack delivers the outstanding functionality of Osprey's Hydraulics Reservoir in a versatile, light weight, high-performance package. Upgrades to the line 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 for men and women ensures that this Osprey Viper pack will provide optimal fit and performance for any activity. 3L Hydraulics Reservoir included. A removable, 20mm ErgoPull webbing hipbelt keeps the pack stable. New direct zip access hydration sleeve for fast loading and Osprey Hydraulics reservoir included. Quickly secure a helmet to your Viper Series pack with the LidLock. A wide panel access to the main compartment with sleeves for pumps and tools. Versatile front shove-it pocket for quickly stashing extra gear. A zip access pocket with protective embossed fabric that fits sunglasses, cell phones or other electronics. Zippered front panel pocket with organizational dividers and key clip. 210D polyester triple diamond ripstop. 600D polyester. Available Color(s): Gunpowder Grey

- Tahoe Mountain Sports