Features: - Super stiff, lightweight carbon fiber sole - Shimano Dynalast technology helps to reduce power loss - soft, perforated synthetic leather with high density for optimal ventilation and fit - Two independent BOA L6 twist locks allow quick fine adjustment of the tension - Adjustable Powerzone cable routing gives the forefoot a secure hold - Wider cleat adjustment: wider cleat adjustment, expands the area for plate attachment - also available in a wide version - ideal in combination with the PD-R8000 pedal Material identification: Upper material: other, textile (synthetic leather) Lining and insole: textile (mesh) Sole: other (carbon) Technologies: Shimano Dynalast Shimano Dynalast is a sole construction with less toe elevation that promotes a smoother, more energy-efficient upward movement when pedaling. The benefits are higher performance, less fatigue and greater comfort for every type of driver. In addition, Shimano Dynalast is characterized by a lighter and thinner sole structure and a larger cleat adjustment range. BOA BOA locks offer fine adjustment to the millimeter for a perfect fit. Lightning-fast, one-handed adjustment, secure lock and quick release. Repel mud and water and are extremely light.