Product details Optimal for: Mountain biking Racing bike Cycling Features: Upper covered with mesh/TPU and synthetic leather in optimal division provides a comfortable fit and light weight. Enclosing, little overlapping upper shoe ensures a snug fit. Integrated seamless midsole and upper cons truction for unparalleled fit, stability and lei chness. BOA L6 twist closure on the instep for fast and comfortable fixation of a wide variety of foot shapes. Carbon fiber reinforced nylon midsole for good power transfer. Flat midsole stabilizes the foot and provides max imal power transmission.