Award-winning running shoe for technical performance on the trails Breathable mesh uppers withstand the rigors of heavy trail wear LaSpEVA footbed creates springy response across long distances STB stabilization technology on side of uppers for precise control Updated heel design increases comfort and provides locked-down fit Soles use dual-compound rubber for superb grip on wet or dry trails Sole lug pattern wraps midsole for stability on off-camber terrain Runs small, so we recommend sizing up for ideal fit New with box and no smoking.