BOA® L6Z dial closure with shield at the lower BOA for quick and comfortable fastening of various foot shapes Renewed upper material layers and new appearance with inkjet printing Integrated seamless insole and upper shoe construction for unparalleled fit, stability, and lightness. The ULTREAD XC rubber outsole with technical racing profile offers the ultimate combination of low weight, high traction, reliable stability, and lasting pedal grip Enclosing, minimally overlapping upper shoe provides a precise fit Carbon fiber reinforced nylon insole for good power transfer. Flat midsole stabilizes the foot and ensures maximum power transfer