The Heat Holders Women's LITE Viola Twist Crew Sock combines elegant texture with dependable warmth - 5x warmer than a standard cotton sock. These socks are crafted with advanced thermal yarns and an intensely brushed inner lining, helping keep feet comfortably warm on cold days. Designed to fit comfortably in relaxed-fit shoes and boots for everyday winter wear. The refined twist-knit design makes these socks a versatile choice for everyday wear.