1, thermal insulation: wool in wool trousers is a natural fiber with good thermal insulation. Wool fiber contains many airbags, which can form an insulation layer around the body, effectively blocking the cold air outside and keeping the body temperature. Cotton trousers are made of pure cotton fabric with fine cotton fibers, unlike wool, which has a warm air bag structure. The warmth retention of cotton trousers is weaker than that of wool trousers.

2, moisture absorption and perspiration performance: wool fiber has good moisture absorption and perspiration performance, which can quickly absorb the sweat on the body surface and discharge it, keeping the body dry and comfortable. Cotton fiber also has certain hygroscopicity, but compared with wool, its hygroscopicity and perspiration performance are poor, and it is easy to keep wet after hygroscopicity.