Size chart

US UK EU CM  KOKOLU
5 2.5 35 21.6 35
5.5 3 35.5 22.2 36
6 3.5 36 22.9 37
6.5 4 37 23.6 38
7.5 5 38 24.2 39
8.5 6 39 24.9 40
9 6.5 40 25.6 41