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Osprey Packs Viper 9 Hydration Pack - 549cu in

$100.00

Item # OSP005N

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Item # OSP005N

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

Tech Specs

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

Size chart

Osprey

 

Packs
Xenith
 MLXL
Torso 18 - 21in
(46 - 53cm)
20 - 23in
(51 - 58cm)
22 - 25in
(56 - 63cm)
Hip 30 - 34in
(76 - 86cm)
33 - 37in
(84 - 94cm)
> 36in
(> 91cm)
Aether 70, 85
 SML XL
Torso 16 - 19in
(40 - 48cm)
18 - 21in
(46 - 53cm)
20 - 23in
(51 - 58cm)
 22 - 25in
(56 - 63cm)
Hip <31in
(79cm)
30 - 34in
(76 - 86cm)
33 - 37in
(84 - 94cm)
 > 36in
(> 91cm)
Aether 60, Atmos
  SM L 
Torso 16 - 19in
(40 - 48cm)
18 - 21in
(46 - 53cm)
 20 - 23in
(51 - 58cm)
 
Hip <31in
(79cm)
30 - 34in
(76 - 86cm)
 33 - 37in
(84 - 94cm)
 
Waypoint (Men's)
 ML 
Torso 18 - 21in
(46 - 53cm)
20 - 23in
(51 - 58cm)
 
Hip 30 - 34in
(76 - 86cm)
33 - 37in
(84 - 94cm)
 
Kestrel, Talon
 S/MM/L  
Torso 16 - 20in
(40 - 51cm)
19 - 23in
(48 - 58cm)
 
Hip 26 - 45in
(65 - 114cm)
28 - 50in
(70 - 127cm)
 
Stratos, Manta 28/36, Zealot, Syncro
 S/MM/L  
Torso 16 - 19in
(40 - 48cm)
18 - 21in
(46 - 53cm)
 
Hip 26 - 45in
(65 - 114cm)
28 - 50in
(70 - 127cm)
 
Ariel 65
 XSSML 
Torso  14 - 17in
(36 - 43cm)
16 - 19in
(40 - 48cm)
18 - 21in
(46 - 53cm)
20 - 23in
(51 - 58cm)
 
Hip  24 - 45in
(60 - 114cm)
24 - 45in
(60 - 114cm)
27 - 48in
(69- 121cm)
29 - 55in
(72 - 140cm)
 
Xena, Ariel 55/75
 XSSM 
Torso  14 - 17in
(36 - 43cm)
16 - 19in
(40 - 48cm)
18 - 21in
(46 - 53cm)
 
Hip  24 - 45in
(60 - 114cm)
24 - 45in
(60 - 114cm)
27 - 48in
(69- 121cm)
 
Aura, Aura AG
 XSSML 
Torso 14 - 17in
(35.5 - 43cm)
16 - 19in
(40 - 48cm)
18 - 21in
(46 - 53cm)
20 - 23in
(51 - 58cm)
 
Hip 24 - 45in
(60 - 114cm)
24 - 45in
(60 - 114cm)
27 - 48in
(69- 121cm)
29 - 55in
(72 - 140cm)
 
Waypoint (Women's)
 SM 
Torso 16 - 19in
(40 - 48cm)
18 - 21in
(46 - 53cm)
 
Hip 24 - 45in
(60 - 114cm)
27 - 48in
(69- 121cm)
 
Tempest, Kyte
  XS/SS/M  
Torso 13 - 17in
(33 - 43cm)
16 - 20in
(40 - 51cm)
 
Hip 24 - 45in
(60 - 114cm)
26 - 45in
(65 - 114cm)
 
Sirrus, Mira 26/34
  XS/SS/M  
Torso 15 - 18in
(38 - 46cm)
17 - 20in
(43 - 51cm)
 
Hip 24 - 45in
(60 - 114cm)
26 - 45in
(65 - 114cm)
 
Exos, Variant, Mutant
 SML 
Torso 16 - 19in
(40 - 48cm)
18 - 21in
(46 - 53cm)
20 - 23in
(51 - 58cm)
 
Hip 24 - 45in
(60 - 114cm)
27 - 48in
(69- 121cm)
29 - 55in
(72 - 140cm)
 
Kode, Farpoint
 S/MM/L  
Torso 15 - 19in
(38 - 48cm)
18 - 22in
(46 - 56cm)
 
Hip 26 - 45in
(65 - 114cm)
28 - 50in
(70 - 127cm)
 
Volt
 One Size
Torso 17 - 22in
(43 - 56cm)
Hip 25 - 50in
(64 - 127cm)
Manta 20
 One Size
Torso 18 - 21in
(46 - 53cm)
Hip 25 - 50in
(64 - 127cm)
Raptor, Viper
 One Size
Torso 15 - 21in
(38 - 53cm)
Hip 25 - 50in
(64 - 127cm)
Viva
 One Size
Torso 14 - 19in
(36 - 48cm)
Hip 25 - 50in
(64 - 127cm)
Mira 18
 One Size
Torso 15 - 18in
(38 - 46cm)
Hip 25 - 50in
(64 - 127cm)
Raven, Verve, Reverb
 One Size
Torso 14 - 18in
(36 - 46cm)
Hip 25 - 50in
(64 - 127cm)
Rev
 Match to usual apparel size
Poco Child Carrier
 One Size
Torso 15.5 - 21.5in
(39.5 - 54.5cm)
Hip 25 - 50in
(64 - 127cm)
Ace (12 - 16 years)
 One Size
Torso 14 - 20in
(35 - 50cm)
Hip 25 - 50in
(64 - 127cm)
Jib (10 - 14 years)
 One Size 
Torso 13 - 19in
(33 - 48cm)
Hip 25 - 50in
(64 - 127cm)
How to Measure:
For best results, have someone take the measurement for you.
Torso:
Start at the iliac crest (the top of your hipbone that you can feel like a shelf on the side of your body). From this level on your spine, measure to the C7 vertebrae, the knobby bone at the base of your neck when you put your head down. Make sure to keep your back straight while having the measurement taken.
Hip:
Measure around your hips, at your iliac crest, not your waist.

Reviews & Community

REVIEWS

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Great Bike Pack

  • Familiarity: I've put it through the wringer

This pack has enough room for the essentials, and a ton of water. It's an Osprey pack, so obviously it's of paramount quality as well.

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

Thank you for the great review!

Leta
Osprey Rep