Fully featured lightweight road competition shoe Optimised for maxium comfort whilst delivering maximum performance Ultra-rigid lightweight carbon fiber composite sole Shimano Dynalast to reduce braking loss increasing pedalling efficiency Boa IP1 dials allow quick micro tension adjustments Powerzone wire guide with front strap hold foot securely Lightweight & supple perforated synthetic leather upper featuring superior fit & added cooling Optimum linkage of air flow between upper insole & outsole Adaptable Cup Insole Weight: 230g (Size 42)