① the measurement units for the above data are all centimeters;
② place your foot on a white paper and use a pen to point out 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 big 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 appears thin, it is recommended to choose a normal size;
⑤ the measured size should be roughly the same as the usual wearing size.If there is a significant deviation, it indicates that the measurement method is incorrect or the data is not accurate enough.
Note: long-term wearing of shoes that do not fit properly is the main cause of falls and blisters, and ankle and knee injuries can also harm health. It is important to choose a size that fits your feet.