Goose down jacket is not fat. According to relevant information, goose down is a very warm down jacket, which is light in weight, good in quality and good in warm keeping effect. Goose down is soft and can be used as wadding for clothes, so it is comfortable to wear. Fiberboard bonding is not easy to occur. The structure and characteristics of fluff itself can capture a lot of air, and more irregular (not easy to flow) spaces are formed between down feathers, which conforms to the physical characteristics needed for warmth.