The name of a new popular clothing category in modern times is a kind of sportswear, such as tennis clothes, jogging clothes, golf clothes and so on. It is a combination of sportswear and daily clothes, and is often used for morning exercise, mountain climbing, outing, playing ball games, etc. Casual clothes are characterized by long-term exposure to sunlight and sweat erosion, sweat absorption and breathability, durable wear resistance and relaxed and comfortable shape. With the popularity of fitness craze in various countries, casual clothes will rise.