Description of Camelbak M.U.L.E. 100oz Hydration Pack The most popular mountain biking system on the market, the M.U.L.E. ® offers the perfect combination of organized and overflow cargo options, plus enough hydration for over 3 hours on the trail. You will appreciate the Camelbak M.U.L.E. easy fill, easy clean via the OMEGA™ Reservoir. Three zippered compartments, including internal organizer provide space for extra gear in your Camelbak. The M.U.L.E. has an Air Director ventilated back panel to help keep you cool and comfortable. The Camelbak M.U.L.E. carries you through. Features: Easy fill, easy clean via the OMEGA™ Reservoir Includes the patented Ergo HydroLock™ 3 zippered compartments, including internal organizer Air Director™ ventilated back panel keeps you cool Removable sternum strap and waist belt included Bungee Cinch System™ combines with lower pocket for protected overflow storage 2 mesh overflow compartments holds wind shell, tubes, or other quick-access items Strap management secures loose webbing