RC7 Series full-featured light weight competition shoe for optimized comfort and pedaling performance. FEATURES. Ultra-rigid, lightweight carbon fiber composite sole. SHIMANO DYNALAST helps to reduce braking loss. Boa IP1 dials allow quick, micro tension adjustments. Powerzone wire guide with front strap hold foot securely. Lightweight and supple perforated synthetic leather upper,featuring superior fit and added cooling. Optimum linkage of air flow between upper, insole and outsole. Adaptable Cup Insole. Best Match: PD-R8000. Color: Red. Size: 45