How to choose the correct size: Step 1. Please measure your foot length carefully, when you choose the size. Step 2. Please choose the correct size according to your foot length For example, if your foot length is 25.0 cm, you should choose the size 40. Step 3. If you are not sure of the correct size, you can click Contact Us!!! Feet length=Insole length-(0～1.5) cm NOTE: Don't choose the size based on the Insole length and Outsole length! Size 35 = Foot Length 22.5cm Size 36 = Foot Length 23.0cm Size 37 = Foot Length 23.5cm Size 38 = Foot Length 24.0cm Size 39 = Foot Length 24.5cm Size 40 = Foot Length 25.0cm Size 41 = Foot Length 25.6cm Size 42 = Foot Length 26.3cm Size 43 = Foot Length 26.9cm Size 44 = Foot Length 27.6cm Size 45 = Foot Length 28.2cm Size 46 = Foot Length 28.9cm Size 47 = Foot Length 29.5cm Size 48 = Foot Length 30.2cm