The hollow fiber material used on the inside, "Air Fusion," is a light, stretchy, heat-retaining, and quick-drying material; with a 5mm thickness and round toe, these socks are the ultimate winter socks.
In addition, the rubber material on the inside of the ankle improves the fit and significantly reduces water seepage inside.
Pressure-resistant jersey (tough jersey) is used on the toe and heel, and grip radial is used on the sole.
