Designed for world-class cross-country and cyclocross racers, the S-Phyre XC903 cycling shoes offer all-day comfort and total foot security for more efficient pedalling performance. The S-Phyre XC903 is Shimano's first lightweight off-road cycling shoe built for the most demanding racing conditions. Race-tuned closure system: Two low-profile BOA Li2 dials allow precise micro-adjustment, while the lower dial is protected against accidental release in the event of impacts. Lock Down: Heel cap with anti-twist stabilisation ensures an optimally secure foot position during intensive acceleration and sustained efforts with a high cadence. Breathability: Variable sized perforations in the upper material increase ventilation and make the shoe elastic so that it can adapt to a variety of foot shapes. Maximum traction: The lightweight Shimano Ultread XC rubber outsole with technical tread offers exceptional grip even on slippery surfaces. Optimised power transmission: The stiff carbon sole and low stack height midsole stabilise the foot and ensure efficient, all-day pedalling performance.