Super-light, super-stiff road cycling shoes with carbon fibre sole for efficient power transfer. Ventilated uppers and sole keep your feet cool while the ratchet strap and two Velcro strap closure system ensure a highly comfortable fit. Not only are carbon soles stiff and reduce the weight of the shoes, they also reduce the sole / pedal axle height significantly which leads to even higher pedalling efficiency ensuring as much of your effort as possible is transferred directly to the drivetrain and your forward motion. Sigma shoes use the highly popular three-hole cleat fixing system, making these shoes compatible with LOOK, Time, SPD SL and SpeedPlay pedal systems (no cleats are included; cleats are supplied with pedals).