If you're plunging into the backcountry, bring along a M.U.L.E. Efficient and compact, this system totes 100 ounces of liquid (more than 4 large water bottles) and sports thoughtfully distributed cargo space with internal organizers for tools and gear. The Air Director ventilated back panel keeps you airy and the waist and Dynamic Suspension harnesses deliver excellent support. Plus, the M.U.L.E. even has a weather-resistant MP3 player pocket!