The Thermal Charcoal Socks for Women (22–24 centimeters, gray) are crafted in Japan using Kishu Binchotan charcoal-infused fibers for natural warmth, breathability, and odor control. The unique charcoal blend emits far infrared rays, helping retain heat in winter while maintaining a dry and airy feel in warmer months. The soft piled lining and thick ribbing deliver comfort and insulation, while the loose ankle opening prevents pressure for a relaxed fit. Made from a high-quality mix of acrylic, nylon, wool, cotton, rayon, and polyurethane, these socks balance warmth, softness, and durability. Designed for everyday wear, they combine traditional Japanese materials with modern functionality.