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Osprey Viper 7 Review


Hydration Packs

  • Currently 3.0/5
Overall avg rating 3.0 of 5 based on 1 review. Most recent review: December 28, 2012
Street Price:   $80
Pros:  Stylish, easy to drink, easy to fill.
Cons:  Heavy for its size, expensive, harder to clean.
Best Uses:  Mountain biking
User Rating:       (0.0 of 5) based on 0 reviews
Manufacturer:   Osprey
Review by: Chris McNamara ⋅ Founder and Editor-in-Chief, OutdoorGearLab ⋅ December 28, 2012  
Discontinued Product
Osprey has discontinued the Viper 7. It has been replaced by the slightly larger Osprey Viper 9 which we expect to test in the future.

This pack stands out for the most structure of the small hydration packs we tested. For some, this makes this the most comfortable small pack tested. But it comes at a cost: this pack is expensive and heavy for how small it is. For the mountain biker who is not obsessed on weight, it is a great option and all the extra back padding gives extra spine protection if you fall off your bike.

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OutdoorGearLab Editors' Hands-on Review


One of the more comfortable small packs in the group. Ample padding on shoulder straps and a bladder that's molded in the shape of the back.


Mild but controllable bounce during running; this really isn't a running pack. It's best for hiking and MTB.

Ease of Drinking

While the bite valve is slightly different than the CB style, drinking is very easy. Flow may be slightly less than with the CB mouthpiece but it's very close. There's a heavy plastic taste for first 10+ fills that's very unpleasant but it finally went away. The magnetic mouthpiece keeps the valve right where you want it.

Ease of Filling

This bladder was the easiest to fill and replace. It slides out of a dedicated pocket and slides right back in with only one Velcro strap to secure. It offers one of the easiest transitions of all the packs tested.


This pack is surprisingly heavy for being so small due to the heavy reservoir and use of plastics in the pack.


If not for this issue, the Osprey would be the best pack of the bunch, hands down. Initially it was absolutely bomber with no leaks whatsoever. At some point it must have cross-threaded or chipped somewhere near the threads because it now has a steady leak from the lid. This could probably be fixed with some pipe tape or something like it. It's tough to know if this is an issue just with our unit or something more universal.

Ease of Cleaning

Osprey reservoirs are not the easiest to clean and, with no quick release, neither is the drink tube.


There is not that much storage when it is fully loaded. But it is nice that you can easily lash a layer to the outside.

Chris McNamara and Adam Pilger

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OutdoorGearLab Member Reviews

Most recent review: December 28, 2012
Summary of All Ratings

OutdoorGearLab Editors' Rating:   
  • 1
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  • 5
Average Customer Rating:     (0.0)
Rating Distribution
1 Total Ratings
5 star: 0%  (0)
4 star: 0%  (0)
3 star: 100%  (1)
2 star: 0%  (0)
1 star: 0%  (0)

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Osprey Viper 7 hydration pack
Credit: Osprey
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