(sizing chart)

USA
 European Heel to Toe(cm)
5 35 22.5
5.5 36 23
6 37 23.5
6.5 38 24
7 39 24.5
7.5 40 25
8  41 25.5
8.5 42 26
9 43 26.5
10 44 27
11 45 27.5