The main purpose of ski pants is the same as any outdoor clothing: Warm, dry and comfortable, and it can prevent collisions, scratches, and other outdoor forces.
The three-tier system of ski pants is widely recognized as the best way to maintain calorie balance and protect you from cold. In short: The first layer or base layer, which is the only layer that is in contact with your skin, its main purpose is to remove moisture from the skin by capillary action; the second layer or insulation layer it should also be used to transfer moisture from the body, but it is primarily responsible for insulating your body by capturing the heat in your body. The third layer or the outer layer is a layer directly in contact with the external environment. It should be windproof and rainproof, and it can also dissipate the body's moisture.