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  26 cm , you should choose the  size 42 . Step 3.  If you are not sure of the correct size, you can click  Contact Us !!! NOTE: D on't choose the size based on the Insole length and Outsole length! Feet length =Insole length -(0-1.5) cm 1. Please allow 1-1.5 error due to the Manual Measurement;2.Please choose the size only according to your foot length;3. lf your feet is wide or thick, we suggest you choose one size large