Shimano's RC9 S-Phyre shoes have been re-engineered & upgraded to give you the ultimate road cycling shoe. The RC9 SPD-SL S-Phyre, Shimano’s top of the line road shoe, is incredibly light, stiff & designed to provide optimum comfort & performance. With brand new dual BOA Li 2 dials which feature a lower profile & two way micro-adjustability for aerodynamic tuning, & a light 360° surround upper for enhanced instep rigidity you can achieve. a true glove-like fit. They are also 10g lighter than their predecessors. Add to that a deeper cup-shaped carbon mid-sole which provides closer pedal feel & riding efficiency BOA Li 2 dials featuring a lower profile & two way micro-adjustability for aerodynamic tuning Sole stiffness rating of 12, ensuring no power is lost out on the road Deeper cup-shaped carbon mid-sole