These socks are made of silk wool mixed fabric, they are super good for winter, cold weather. Healthy, soft, warm, and kind to sensitive skins. Material: 35.8% mulberry silk, 34.3% wool, 17.5% poly, 11.3% chinlon, 1.1% spandex. 4 Colors: black, camel, gray and dark gray.Two sizes:-Women, EU 34-38, US 4.5-7, Asia 22-24.-Men, EU 38-43, US 6.5-9, UK 5.5-8, Asia 24-26. * Silk is a natural insulator keeping toes warm, but not too hot.* Gentle hold on legs without restriction.* Feel the comfort of wal Comfortable Brown Socks For Fall, Warm Brown Socks For Fall, Soft Beige Winter Socks, Warm Comfortable Fall Socks, Comfortable Thick Winter Socks, Cozy Soft Beige Socks, Warm Solid Socks For Winter, Warm Comfortable Socks For Fall, Solid Warm Winter Socks