11. High-quality material: 35 constant temperature socks are made of cotton and polypropylene. The outer layer is pure cotton, and the inner layer is healthy fiber. 22. Warm and breathable: Adding elastic fiber can give full play to the healthy function of healthy fiber and increase the moisture permeability of socks. Under the stimulation of ambient temperature and human body temperature, it can produce energy that is easily absorbed by the human body. 33. Improve circulation: It can improve the vitality of human cells, promote metabolism, and effectively improve the microcirculation of the human body. 44. Very suitable for outdoor activities: skiing, snowboarding, hiking, hockey and other sports. 55. Universal: One size fits everyone.