Helping the body maintain a constant temperature is one of the roles of clothing. When the temperature is low, the clothing should be able to prevent the heat of the human body from being lost too much, and when the temperature is high, it does not hinder the heat dissipation of the body, and can prevent the adverse effects of light and heat in the sun on the human body. In order to meet the above requirements, the fabric of the production of clothing should have the characteristics of heat preservation, air permeability and moisture absorption. I wonder if you pay attention to these when you buy clothes.