Rotating BOA® L6 lock at the instep for quick and easy fitting for different foot shapes. Seamless integrated midsole and upper shoe construction for unparalleled fit, stability, and lightweight performance. The ULTREAD XC rubber outsole with a technical running profile provides the ultimate combination of low weight, high traction, reliable stability, and durable pedal grip. The shoe upper made of mesh fabric - TPU and synthetic leather in an optimal division ensures a comfortable fit and low weight. The enveloping and low-overlapping upper shoe design guarantees a perfect fit. Nylon midsole reinforced with carbon fiber for effective power transfer. The flat midsole stabilizes the foot and ensures maximum power transmission.