There are many kinds of flight suits in China. There is a high-altitude flight suit, similar to that of the US Air Force. Wear it only when flying high altitude subjects. Ordinary flight suits are separated from pressurized anti-load suits. Unlike the United States, some non-altitude and non-stunt subjects do not wear anti-load clothes. Leather flight suit is only worn in winter, and summer flight suit is a kind of fabric similar to card clothing, so the color is different.