The Ocun Jett QC is a performance shoe that doesn't compromise comfort—made with Ocun's stickiest rubber and a stiff midsole for standing on tiny pebbles at the Buttermilks, minuscule pockets at the Happies, or endless edges at the Owens River Gorge. QC stands for quick closure,e which is the double velcro straps that hold the foot firmly but make taking them off a breeze. The Ocun Jett is a perfectall-aroundd shoe for Bishop climbing. The sizes are U.S. based.