NIKE Shoes Men's Running Free Run +2 Lightweight breathable open sandwich mesh uppers  Keeps your feet cool whilst running in Strategically placed solid rubber segements have been added to the sole to enhance tractio A center of pressure heel design - enhances cushioning without compromising flexibility Phylon midsole  A responsive, cushioned EVA midsole material making your ride more cushio A full inner sleeve has been added to provide a sock like fit