1. The unit of measurement of the above data is cm;
2, there is a small gap between the size of the left and right feet, which should be based on the data of the big feet;
3, if the instep is high, the foot type is wide, it is recommended to choose a large-code; if the instep is flat, the foot is slim, it is recommended to choose a small code;
4. It is recommended to measure the size of the foot in the afternoon, because the foot will slightly expand in the afternoon, and the measured data is more accurate.