lease according you foot length(Heel to Toe) to choose size.
the us size just for reference.
for the size if you still get confused.
feel free to contact with us.
The length of the insole is not equal to Heel to Toe (cm).
With the difference in the measurement method,please allow 1-2 cm in size deviation.
If your feet are fat or wide,we suggest you choose one size larger.
Insoles can be taken out, it is normal.
USA 4.5 = European 35 = Heel to Toe(cm) 22.5CM
USA 5 = European 36 = Heel to Toe(cm) 23CM
USA 5.5 = European 37 = Heel to Toe(cm) 23.5CM
USA 6 = European 38 = Heel to Toe(cm) 24CM
USA 6.5 = European 39 = Heel to Toe(cm) 24.5CM
USA 7 = European 40 = Heel to Toe(cm) 25CM