DESIGN: Seam on the tongue allows you to widen the opening for easy on and off Vertical mesh upper helps keep you cool IN-SHOE COMFORT: Foot slides into the shoe easily with the help of the heel hinge system Soft cushioning in the midsole provides a comfortable, springy return to help you go that extra lap DURABILITY AND TRACTION: Synthetic toe skin adds durability to every step Tread grabs at pavement, grass, and gravel to give them extra grip