Please according you foot length(Heel to Toe) to choose size.

the us size just for reference.

Outsole length > Insole length > Foot length

for the size if you still get confused.

feel free to contact with us.

USA 4.5 =European 35 =Fit foot length 22.5CM

USA 5 =European 36 =Fit foot length 23CM

USA 5.5 =European 37 =Fit foot length 23.5CM

USA 6 =European 38 =Fit foot length 24CM

USA 6.5 =European 39 =Fit foot length 24.5CM

USA 7 =European 40 =Fit foot length 25CM

USA 7.5 =European 41 =Fit foot length 25.5CM

USA 8 =European 42 =Fit foot length 26CM