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Osprey Packs Viper 10 Hydration Pack - 600cu in

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Item # OSP0226

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Item # OSP0226


Whether your favorite piece of outdoor gear is your mountain bike, trail-running shoes, or local day-hiker's trail map, the Osprey Viper 10 Hydration Pack is eager to tag along and improve your time on trail.

  • HydraForm reservoir is made with BPA- and PVC-free materials and features a design that squeezes your water supply for easier drinking
  • SpacerMesh back panel provides super-light cushioning for a comfortable fit
  • BioStretch shoulder harness system features mesh-covered foam for superior comfort and small sleeves to hold your energy gel pouches
  • LidLock helmet clip feature allows you to attach your bike helmet to your pack for hands-free storage.
  • Wide variety of organizational pockets keep your tire pump, patch kit, and multi tool in place
  • Side compression straps reduce pack volume if you’re carrying a smaller load
  • Reflective detailing on front panel and a blinker-light attachment loop help keep you visible

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Viper 10 - Best of the best

  • Gender:Male
  • Familiarity:I've put it through the wringer

I've owned this pack for over a year, used in every condition from freezing cold to 100deg summer heat to pouring rain. Here's a quick list of reasons to buy this pack:

-3L capacity means you won't run low as often

-lighter weight than similar products

-roomier than it looks, great organization. I can carry tools, tire pump AND shock pump, tubes, wallet/phone and still have plenty of room for food...and everything is EASY to access without partial unloading

-the magnetic tube holder is awesome!

-no sloshing, and the rigid bladder support improves airflow on my back

-stuff inside stays dry even after a four hour (very) rainy ride

-Compliments! Your friends will want one too

Is the reservoir removable (e.g. so I can...

Is the reservoir removable (e.g. so I can use it with my full size backpacking pack as well)? Not a huge deal, but my old one just ripped open, so two birds ...


Best Answer

Yes it is easily removable, just undo a velcro tab and the reservoir slides out. Also makes for easy filling - just slide out and fill from the sink without trying to juggle a full pack. The reservoir has a rigid backing with handle, and a HUGE opening to further simplify filling. The hose will take a bit longer, but also easy to remove.


No complaints

  • Gender:Male
  • Familiarity:I've put it through the wringer

I got this bad boy to use for mountain biking trips in the hot Texas sun. It's held up brilliantly! The water in the pouch stays cool, no sloshing, easy to refill. Basically, everything you could ask for in one of these packs. The helmet holder thing is actually surprisingly convenient for when I'm off the bike.


Viper 10 is good to go!

    love the magnetic bite valve set up, works great. The pack sits real close to your body and feels like part of you..plenty of space for a days ride...the best thing, is the bladder. EZ to fill and low profile. I've used a Camelback Mule for years and the Viper has become my go to pack.

    Unanswered Question

    What does the Viper 10 weigh?

    What does the Viper 10 weigh?

    Is the SpacerMesh back panel removeable?

    Is the SpacerMesh back panel removeable?

    Avg. ride time: 4m per week
    • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

    Awesome Pack

      Was trying to decide between this and the Viper 7. Went with the 10 - it's only an ounce heavier and feels like it has more cargo space. The pack has straps on the side that expand the main pouch which allows for more gear (a feature the 7 doesn't have). The front mesh-like pouch is also durable and gives enough stretch to fit small items you need and I think it's more versatile than the stretchy criss-cross webbing on the front of the 7. This pack is perfect for mountain biking or day hiking. Huge fan.

      What is the water capacity?

      What is the water capacity?

      What is the difference between the viper...

      What is the difference between the viper and the raptor (other than looks)?

      The Viper (men's) has a "detuned" hipbelt, harness and packpanel, and a slightly different "hydra lock" system on the inside to carry your reservoir. The inner pocketing is the same as the Raptor. The Raptor comes in two sizes, S/M and M/L. The Viper comes in one size only, and fits like the Raptor M/L. Let me know if you have other questions!

      Best Answer

      On the Viper: The access to the reservoir is a simple velcro tab to open the pocket. THe backpanel is spacer mesh and foam. The hipbelt is small AND removeable. The framesheet is reduced--HDPE framesheet molded to fit the handle on the reservoir--so it won't carry weight well BUT it is also lighter.

      On the Raptor: The access to the reservoir is a zippered pocket that squeezes the reservoir a little better than the Viper's pocket. The backpanel is a stretched mesh over a rigid corrugated foam for better ventilation and weight carrying. The hipbelt is thicker with stretch pockets.

      For the upgrade to the Raptor, you get a slightly heavier pack that breaths better, carries weight better, and stabilizes the sloshy reservoir better.


      You had me at LidLock...

        I bought the hydration pack, not for the hydration system, but for it's nice shape and ability to carry my gear on day trips while riding. I wanted to be able to hold a SLR with a short lens, tools, tubes, flip video cam, and other random things I would find on my ride. First thing you should do: pull out the plastic support wall in the bladder compartment. After you take out the plastic, this pack is pretty fun. The LidLock system is killer and I have found it to be a very comfortable pack overall.