Pearl iZUMi Men's Fuel Cyling Shoe 100% Synthetic and mesh Rubber sole X-Road nylon plate delivers great pedaling stability, power and efficiency with off-the-bike comfort and walk-ability Blown rubber lugged outsole for superior traction and durability SKYDEX heel crash pad for excellent off-the-bike shock absorption Flexible forefoot and a running shoe beveled heel Compatible with SPD and all Look pedal systems