Fuli atheletic running series socks use coolmax fabric & Tactel, with excellent moisture perspiration function.It has the following advantages: CoolMaX & Tactel have a strong air permeability and good moisture control, the body can produce too much heat and sweat away from the skin, transported to the surface of the fabric, which quickly evaporates. Our running socks' dvantages: - cool - dry - comfortable - breathable - not sticky - soft - no residual sweat or mildew - no deformation, no shrinkage - machine wash and spin dry CoolMaX offers permanent superior moisture treatment, And can enhance the wearer's comfort