CamelBak: DON’T LET THE RAIN STOP YOU We’ve taken the DNA from the M.U.L.E.® family and given it all-weather protection. This pack features weatherproof construction so you can focus on your adventure and not your gear. FEATURESStormproof Welded Construction.Air Support™ Back Panel With Body Mapping Technology.Command Center™ Harness.Helmet Carry.Overflow Pocket.Integrated Tool Organization.