Hi,Dear valued customers! we advising you can choose size according your foot length in our size table.
For example, if your foot length (Heel to Toe) is 26 cm,please choose size 42 in this model.
Size 39 fit for foot length is 24.5cm
Size 40 fit for foot length is 25.0cm
Size 41 fit for foot length is 25.5cm
Size 42 fit for foot length is 26.0cm
Size 43 fit for foot length is 26.5cm
Size 44 fit for foot length is 27.0cm
Size 45 fit for foot length is 27.5cm