These are the thermal socks that are rated to keep your feet warmer than any other thermal socks in the world. The socks' advanced insulating yarn is knitted with a unique tufted stitch into long-looped piles, and then the inside is intensely brushed to trap warm air closer to the skin while providing superior cushion and comfort. In independent laboratory tests, these socks achieved a Thermal Overall Grade rating (TOG) seven times higher than standard cotton socks and nearly three times higher than ordinary thermal socks. 91% acrylic/5% nylon/3% polyester/1% elastane. Two pairs. Imported. Black. Unisex sizes S/M (men’s shoe 4-8, women’s 5-9) or L/XL (men’s 7-12, women’s 8-13). (12 oz.)