Choose the size according to your foot length (do not choose the size according to the usual size in your country!!!) please choose Size 33, if your foot length is 21.5cm Please choose size 34, if your foot length is 22cm please choose Size 35, if your foot length is 22.5cm Please choose size 36, if your foot length is 23cm please choose Size 37, if your foot length is 23.5cm Please choose size 38, if your foot length is 24cm please choose Size 39, if your foot length is 24.5cm Please choose size 40, if your foot length is 25cm 2.Due to manual measurement, please allow a 0-0.5cm error in size 3.If you have any questions, please contact our customer service first, we will help you solve it Please read our size chart carefully! It can help you choose the right size based on the length of your foot Please note that if your feet are too long or too wide, please choose a size that is one size larger than usual