The Camelbak M.U.L.E. NV Hydration Pack is an elite version of their classic MULE mountain biking pack. Optimized for even more comfort, the MULE NV features a N.V.I.S. Back Panel. This outstanding design increases the ventilation to provide greater comfort on your ride. The 2013 MULE NV features the Antidote reservoir with its fully customizable Quick Link system for maximum intake and optimum performance. The Dynamic Suspension Harness maximizes load stability, so you won't have everything shifting around and throwing you off balance on those turns. With over 650 cubic inches of storage, the M.U.L.E. NV carries all of your biking essentials including helmet. You can even listen to your tunes on the trail, as this pack has a easy-to-access media pocket with a weather resistant zipper. Should your bike path lead into incliment weather, protect the contents of your Camelbak MULE with the integrated rain cover. The Camelbak M.U.L.E. NV Hydration Pack offers the perfect combination of organized and overflow cargo options, plus enough hydration for over 3 hours on the trail.