Foot length 22.5(cm) = Euro 35 you should choose USA 5
Foot Length 23.0(cm) = Euro 36 you should choose USA 6
Foot Length 23.5(cm) = Euro 37 you should choose USA 6.5
Foot length 24.0(cm) = Euro 38 you should choose USA 7.5
Foot length 24.5(cm) = Euro 39 you should choose USA 8.5
Alloy Length 25.0(cm) = 40 Euro You should choose USA 9
Alloy Length 25.5(cm) = Euro 41 You should choose USA 9.5