FLEECE LINING: Women's thermal socks feature an ultra-soft brushed fleece lining, making them incredibly warm and comfortable THERMAL: Soft brushed fleece lining retains body heat to provide optimal insulation and keep your feet warm in winter; the thick, high-quality fabric regulates temperature to maintain the ideal level of warmth COMFORTABLE: Added stretch fabric and super soft fabric provide a slim, streamlined fit for comfort while allowing complete freedom of movement ANTI-ODOR: Made from a lightweight, breathable fabric that prevents sweat buildup on the feet; immediately wicks moisture away from the skin and attacks odor-causing bacteria to keep your feet fresh DURABLE: Unlike some inferior bed socks, we use advanced weaving technology and high-quality fabric to prevent socks falling off