Thin waist down jacket is not a formal suit. Down jacket is not business casual wear. Generally, coats or windbreakers and suits are business casual clothes. Down jacket does not belong to the scope of business dress. The down jacket with drawstring at the waist highlights the curve of women's waist, makes the down jacket look less bloated, and also increases the formal sense of down jacket, which is no longer just for daily and leisure wear. Suits have always been the darling of men's wear kingdom. The main features of a suit are its crisp appearance, smooth lines and comfortable wearing. If you wear a tie, it will look more elegant and simple. In the increasingly open modern society, suit, as a clothing style, has also entered the ranks of women's wear, reflecting the independence and confidence of women as well as men. Some people call a suit a woman's ever-changing coat.