Casual wear is different from formal wear and sportswear, and it is self-contained. Traditional formal dress refers to formal dress suitable for serious occasions, for formal occasions, not for entertainment and home environment. Such as suits, Chinese tunic suits and national costumes. The specific dress and collocation have obvious stress, and its starting point lies in the formal etiquette needs of formal occasions. Sportswear refers to clothes specially used for sports competitions. It is usually designed and produced according to the specific requirements of sports. In a broad sense, it also includes clothes worn during outdoor sports activities. Except formal clothes and sportswear, other types of clothes can be collectively referred to as casual clothes. It should be said that casual wear is not as occasion-oriented as formal wear and sportswear. Casual clothing reflects the diversity and versatility of human life. Therefore, casual wear is more plastic than formal wear and sportswear, which can comprehensively reflect a person's cultural quality, mental outlook, value orientation and other internal things. Because of the individualization of these connotations, people's cognition of casual wear is easy to be blurred. Traditionally, it can be divided into more classical oriental charm, more modern Japanese and Korean style, and European and American style. According to the classification of application occasions, it can also be divided into more formal "banquet dress" and leisure "home clothes". The scope of casual wear is also extensive, but basic styles such as T-shirts, casual shirts, jeans and sweaters have been enduring for a long time. The category, color and style of specific styles will also change slightly with the culture and trend of the brand, and there is no obvious classification. Domestic brands such as Samameters, Bang Wei Benny Road Tang Shi, etc.