XT-6 Cathay Spice/Quarry/Rose Cloud from SALOMON. The XT-6 is the legendary ultra runner shoe that has been the number one choice for professional athletes since its original release in 2013. The XT-6 is created to handle extreme conditions and has proven so time after time, year after year. Equipped with the high performing Contagrip outsole and Orthodite insole for absolute comfort.