Size: Women's 5-9Also fits: Men's 4-8Women requiring size 8-13 can look at Men's styles or Women's Big/Tall.The first and original Heat Holders Crew sock!Keep feet warm on the coldest of days and pull on this pair of solid color crew length Heat Holders for women, the warmest thermal sock.Thick, chunky and with a massive tog rating of 2.34, Heat Holders are made from a specially developed heavy bulk yarn which has extreme thermal qualities. With long pile cushioning, these thermal socks will help keep feet fully comfortable and supported.The inside of each sock has been intensively brushed that not only feels sensationally soft but also traps warm air close to the skin keeping your feet warmer for longer.Heat Holders thermal socks are also designed and built to be non-binding.WARMEST THERMAL SOCK: Heat Holders are the warmest thermal socks Heat Holders offer and are 7X warmer than a basic cotton sock. They are made of advanced thermal yarn with a tog rating of 2.34 but are super soft and comfortable to wear. Our non-binding socks are available in a variety of colors and styles. SUPER SOFT: Our thick winter socks keep you warm and comfortable. Each sock is intensively brushed so they are sensationally soft and trap warm air close to the skin keeping your feet warmer for longer! Whether you are hanging out at home or the cabin, headed to work, or off on an adventure, Heat Holders will keep your feet warm and comfortable. DIABETIC FRIENDLY: Heat Holders are made with a patented loop technology that allows for enhanced warmth and are made with a non-binding top for a comfortable fit. Heat Holders are diabetic-friendly and provide relief for those with cold feet caused by circulation issues. They keep warm air close to your skin & offer support without feeling too tight or uncomfortable.