About the choose of size. 



Foot length 21.5-22.5(cm) = Size 34/35



Foot length 22.6-23.5(cm) = Size 36/37 



Foot length 23.6-24.5(cm) = Size 38/39 



Foot length 24.6-25.5(cm) = Size 40/41



Foot length 25.6-26.5(cm) = Size 42/43 



Foot length 26.6-27.5(cm) = Size 44/45.