Precision tuned for xc riding whether you39re a xc racer or a regular xc rider you39ll gain an edge from shimano39s new cross country soles designed to meet the specific demands of off road riding these soles employ shimano dynalast technology to reduce braking loss and enhance pedaling efficiency shimano optimized sole stiffness and gave the sole a lower profile so that your leg drive would transfer more directly to the pedal also the spikes and blocks on the outsoles are arrange