Camelbak Razor:
Whether you go big on training or time trials, the 72-oz. CamelBak® Razor is the perfect size for fitting over or under your cycling jersey, and the short pack length won't interfere with getting gear out of your jersey's back pockets. The Razor features a baffled reservoir for a low aerodynamic profile and a special Tube Director that allows you to position your drinking tube for complete hands-free drinking. This pack also has a special removable IceBak® insulating panel so the water in the pouch will help keep you cool (add a few ice cubes to the Razor reservoir and you'll have the next best thing to air conditioning during summer rides).