Enclosing, minimally overlapping upper shoe made from a similar synthetic leather and upper material pattern as the RC7/RC9 provides a precise fit. Integrated seamless insole and upper material construction set a new standard for fit, stability, and performance at a low weight. BOA® Fit System with L6C dial and lacing profile developed by SHIMANO. Toe box and insole made using 23% (by weight) recycled material. Carbon fiber reinforced nylon insole for good power transfer. Flat midsole stabilizes.