S-lab proven innovation and performance, fit for all trail runners. Seamless light weight upper improves overall comfort. New, more aggressive outsole and a new midsole with better cushioning. Everything about XT Wings 3 is new, from the new outsole with better traction, to a better toe-cap, to the totally welded upper. More flexible, lighter, and more protective, the XT Wings 3 is the ultimate mountain running machine.