Shirts can be divided into combed cotton shirts, silk shirts, double-breasted shirts, polyester-cotton shirts, etc., which are light, thin, soft, cool, quite, and breathable. Since the shirt collar is usually made of a hot-melt adhesive material, it is not necessary to soak it in warm water of 60 ° C or higher during washing. The material of the shirt used to be white poplin. Nowadays, more shirts made of silk, yarn and all kinds of chemical fiber are used. Styles include stand collars, large lapels, small lapels, and women's styles with round necks or bald collars. Generally speaking, the short sleeves are mostly bald collars and round necks, while the long sleeves are mostly small lapels.