When racing through the Sierra is the only thing on your mind, carry yourself up, up, and away in the MTN Racer 3. The three-piece EVA midsole offers rock protection and comfort all while staying incredibly light.  This latest version features an increased 33 x 28 mm platform for even more cushioning and protection underfoot as well as improved toe sweep for a fast transition and smooth ride. The midsole has been upgraded with Topo's new ZipFoam™ formula for the perfect balance between soft cushioning and snappy response, while the Vibram® Megagrip outsole remains unchanged to provide you the traction you know, love, and trust on that beautiful Sierra granite.