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.  

  Size 13=47    fit for foot length is 29cm.  

         Size 14=48    fit for foot length is 29.5cm.      

  Size 15=49    fit for foot length is 30cm.