Heat Holders Women's Thermal Socks are designed to provide maximum warmth during cold winter days. These socks are made from a specially developed heavy bulk yarn, which traps air to retain heat. The brushed inner lining offers a soft and cozy feel, while the long looped thermal pile holds more warm air close to the skin. With their excellent thermal properties and comfortable fit, these socks have become a top choice for women seeking ultimate warmth on Amazon.