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  • Osprey Packs - Viper 9L Backpack - Blaze Orange
  • Osprey Packs - Viper 9L Backpack - Black
  • Osprey Packs - Viper 9L Backpack - Wasabi Green
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  • Osprey Packs - Viper 9L Backpack - Blaze Orange
  • Osprey Packs - Viper 9L Backpack - Black
  • Osprey Packs - Viper 9L Backpack - Wasabi Green

Osprey Packs Viper 9L Backpack


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    • Blaze Orange, One Size
    • Black, One Size
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    2 Reviews


    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

    Tech Specs

    [main] 210D polyester, [accent, bottom] 420D nylon packcloth
    9L (549cu in)
    Atilon foam
    Shoulder Straps
    Waist Belt
    Hydration Compatible
    Reservoir Included
    yes, 2.5L
    front panel
    1 zippered stash, 1 shove-it, 1 shoulder strap
    Helmet Carry
    18 x 9 x 7 in
    Claimed Weight
    1 lb 3 oz
    Recommended Use
    mountain biking, hiking
    Manufacturer Warranty

    Tech Specs

    • Reviews
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    Perfect for skking

    • Familiarity: I've put it through the wringer

    I was looking for small hydration pack that was lift friendly, but was big enough to put more than 1 bar in it. This bag was perfect. And unlike the Camelbak bladders, this one was flat even when filled. Only time that it puffed out is when I blew the water back into the bladder to prevent the hose from freezing. Then of course, it puffed out. Will be perfect for hikes and other outings. I bought the M/L for my 5'4 122 lbs short waisted, broad shoulder body. Same size as my Momentum 34