Heat-moldable Custom-Fit technology: a Shimano innovation.  Custom-Fit technology in heel cup stabilizes the foot. Custom-Fit technology in the insole for support & comfort.  Carbon fiber reinforced polyamide midsole and dual injection flexible polyamide-polyurethane outer sole transfers your energy straight to the pedals.  Asymmetric buckle & dual off-set straps securely holds foot and allows subtle adjustments. Off-set straps prevent pressure points. Tough synthetic leather upper with low-profile armor provides foot protection and excellent durability. Composite toe spikes increases traction in sand or loose dirt. Available in E-width for wide feet.