This shoe is a flat-out cross-country racer, developed with some of our top XC World Cup pros to do two things: go fast and finish first. In XC racing, race-winning performance is all about saving weight and maximizing power, so we minimized the materials on the sole to lighten them up and our Mavic Ergo Dial lacing system to boost efficiency. Combined with our Ergo 3D tongue and Ortholite insole, you get a super secure and comfortable fit. The Crossmax SL Ultimate also uses an Energy Grip Terra Carbon outsole with an Energy Frame and carbon heel lock to provide exceptional foot support and power transfer. It all adds up to a super-charged XC race shoe with the perfect combination of lightness and power.