How to choose the correct size?Measure your foot length according to the photo.Find out the corresponding size from the size chart according to your foot lengthPlease do not measure the length of the insole, it is different from the foot length.If you need an accurate size, please do not buy directly according to the European size of your country/region. Must be based on actual foot length.If your feet are wider or thicker, please choose a larger size. FREE SHIPPING WORLDWIDE