M is the abbreviation of the English word "middle", which means average. For women's wear, the code S is 155CM, the code M is 160CM, and the code L is 165CM. Men's wear is 10CM on the basis of women's wear.

Through the highest point of the chest, the chest should be parallel to the ground. Waist circumference should be measured at the thinnest part of the waist, not at the waist of trousers. In the place about 3cm above the navel, use a ruler to measure parallel to the ground for one week. Hip circumference should pass the highest point of hip and be measured parallel to the ground for one week.