Note: This is a casual shoe size. It is recommended to have the same size as regular casual shoes, for example, if you wear size 41 running shoes, you can purchase size 41. 1) The measurement units for the above data are all millimeters; 2) Place your foot on a white paper and use a pencil to mark the longest point in front and back. The distance between the two points is the correct foot length; 3) There is a slight difference in the size of the left and right feet, and the data of the larger foot should be used as the standard; 4) If the instep is high and the foot shape is wide and fat, it is recommended to choose a larger size; If the instep is flat and the foot shape is slim, it is recommended to choose Smaller by one size; 5) The measured size should be roughly the same as the usual size worn. If there is a large deviation, it indicates that the measurement method is incorrect, Or the data may not be accurate enough.