InForm Race profile for a slightly more comfortable fit, but optimised for high performanceSingle BOA® L6 dial for precise fit and easy micro-adjustmentsRobust perforated synthetic upper materials meet the needs of off-road cyclistsDurable GnarGuard rubber lining protects the foot from abrasions and other trail pitfallsBronze Series nylon composite sole is stiff but allows for easy walkingStiffness index: 6 out of 14Tachyon rubber outsole for optimal traction on any surfaceCompatibility with 2-bolt SPD cleats