The triumph is back it now features an everun landing zone tri flex outsole and isofit upper ensuring supreme cushioning in a smooth flowing ride the iso series of shoes are engineered to make you want to run isofit consists of a soft inner sleeve and floating support cage that combine to create a dynamic fit system that adapts to the shape and motion of your foot pwrgrid provides more cushioning than standard midsoles while maintaining fluid transitions for a smooth ride the triumph de