Tips: This is not a standard European and American size. 2. Foot length is the only criterion for customers to choose the appropriate size. The length inside the shoe should be 0-1.5cm longer than your feet. 4. If you are not sure about the correct size, please contact us. Note: Usually, there is no shoe box in the order. 1. Due to manual measurement, please allow an error of 1-1.5; 2. Please choose the size only according to your foot length; If your feet are wide or thick, we suggest you choose a bigger size. Please choose the size according to your foot length If your foot length is 21.5cm. Choose size 33 =4 If your foot length is 22cm. Choose size 34 =4.5 If your foot length is 22.5cm. Choose size 35 =5 If your foot length is 23cm. Choose size 36 =5.5 If your foot length is 23.5cm. Choose size 37 =6 If your foot length is 24cm. Choose size 38 =6.5 If your foot length is 24.5cm. Choose size 39 =7 If your foot length is 25cm. Choose size 40 =7.5 If your foot length is 25.5cm. Choose size 41 =8 If your foot length is 26cm. Choose size 42 =9 If your foot length is 26.5cm. Choose size 43 =9.5 If your foot length is 27cm. Choose size 44 =10