Hi,Dear value customers!Please choose size according to the foot length, please do not use the insole length.For example,if your foot length (Heel to Toe) is 26.5cm, please choose size 8.5=42 in this model.

    Size 6.5=38   fit for foot length is 24.5cm.

 Size 7=39      fit for foot length is 25cm.

    Size 7.5=40   fit for foot length is 25.5cm.

 Size 8=41      fit for foot length is 26cm.

    Size 8.5=42   fit for foot length is 26.5cm.

 Size 9.5=43   fit for foot length is 27cm.

    Size 10=44    fit for foot length is 27.5cm.

    Size 11=45    fit for foot length is 28cm    

    Size 12=46    fit for foot length is 28.5cm.