The upper shoe made of mesh fabric/TPU and synthetic leather with an optimal layout ensures a comfortable fit and low weight. The encasing, minimally overlapping upper shoe provides a precise fit. Integrated seamless midsole and upper shoe construction for unparalleled fit, stability, and lightness. The ULTREAD XC rubber outsole with a technical racing profile offers the ultimate combination of low weight, high traction, reliable stability, and lasting pedal grip. BOA® L6 twist lock at the instep for quick and convenient fastening of various foot shapes. Fiberglass-reinforced nylon midsole for good power transfer. The flat midsole stabilizes the foot and ensures maximum power transfer.