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Osprey Viper 4 Hydration Pack
Osprey Viper 4 Hydration Pack
Weight: 15 oz / 425g
Size: 250 ci / 4 liters
Color: Electric Sky Blue
Price: $64.00
Sale: $54.95

Stock Status:In Stock

Product Code: 249-10514-1

Description Technical Specs Sizing Chart
The Osprey Viper 4 is an ideal size for fast mountain biking, trail running and hiking sessions.

Bike-specific pocketing along with Osprey's proprietary LidLock™ helmet holding system keeps your gear organized. Cell phone/MP3 pocket on shoulder strap also works for energy gel packets. Load-lifter straps pull the pack in close for extra stability and comfort.

Top zippered pocket is heat embossed fabric to be easy on sunglasses. Compartment has a tool pouch and key clip. X-Cord bungee system allows pack compression and/or ability to hold a lightweight jacket. Waistbelt can be removed for going even lighter.

2-liter HydraForm™ Reservoir included, with 180° On-Off Pivot Bite Valve that easily rotates on and off in either direction. The Viper is sized specifically for men (longer torso length than a women’s pack).

• BioStretch™ Harness
• Full elastic stretch sternum strap
• Built-in magnet for quick bite-valve attachment
• Space mesh backpanel creates a lightweight, yet supportive and ventilated backpack
• Cell phone / MP3 pocket on shoulder strap
• Modified straight ErgoPull™ hipbelt closure
• LidLock™ helmet clip
• Top zippered pocket for quick access
• Compartment with tool pouch & key clip
• Blinker light attachment patch
• Reflective graphics
  • Lightweight
  • Space Mesh Backpanel
  • X-Cord Bungee System
  • LidLock Helmet Holder
  • 2 Liter Reservoir Included

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