Faster, lighter, ... rider? These babies are perfect to give the best out of every ride. Lightweight ultra-rigid carbon fiber sole for maximum power and minimum energy lost. The Shimano Dynalast technology also works to reduce energy loss and relieve foot stress on longer rides. The dual Boa® dial system allows for quick micro-adjustment so that fit stays perfect. Not to forget the detailing on the supple synthetic leather fabric for style and fit!