The Pearl Izumi Men's Race RD Road Cycling Shoes provides benchmark performance and fit in a light and affordable package. The Select 1:1 Power plate is made of nylon and composite fiber for light weighr stiffness and durability. The plate also has a built-in Longitudinal Arch Support for optimal support, power and efficiency. This shoe also has an anatomical buckle closure that follows the shape of your foot and eliminates hot spots and removes pressure from your instep.