Osprey’s Viper 13 is the right choice when you’re out for a big ride in the mountains or the desert.
You’ll pedal in comfort with the foam framesheet spreading the load across a ventilated mesh backpanel.
The BioStretch™ shoulder harness provides a contoured fit.
Access your gear in the main compartment via the zippered front panel. You can slip small items into the dual side mesh or harness pocket or stash a layer in the front fabric shove-it pocket for quick access. There’s even a scratch-free slash pocket for your shades.
Bike-friendly features include a Hydraulics™ LT 2.5 liter reservoir with magnetic bite valve retention, internal bike pump storage loops, and Osprey’s innovative LidLock™ helmet attachment system.
The webbing hipbelt is removable to shave ounces while upper and lower side compression straps offer additional stability if you’re carrying extra weight.