Pearl iZUMi Men's X-Alp Elite Cyling Shoe 100% Synthetic Rubber sole Please use the vendor size chart to determine the EU to US size conversion. Please be aware that there may be some inconsistencies in the US sizing conversion indicated in the shoe tongue label; the EU size is accurate, but the US conversion may not be. P.R.O. 1:1 Anatomic buckle closure Dual density EVA X-Alp outsole and midsole with firmer second density EVA between pedal and foot for off-the-bike cushioning and comfort and on-the-bike power transfer Energy Cell technology in heel crash pad for ultimate cushioning when off the bike Compatible with SPD and all Look pedal systems