All the same warmth as the ORIGINAL™ Heat Holders® Crew sock, but in an extra long leg length, plus elasticated foot & ankle support. Works really well with boots and great for spending time outdoors during the cold winter months. Keep feet warm on the coldest of days and pull on this pair of ribbed, cuffed, long 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 such that they not only feel sensationally soft but also trap 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. Fiber composition: 87% acrylic, 8% polyester, 4% nylon, 1% elastane Extra-long length (13.4" from heel to top) - ideal for boots Advanced thermal yarn More than 7X warmer than a basic cotton sock! Sensationally soft Non-binding Single pair pack Fits Women's size 5-9 Heat Holders Women's Rachel Original Ribbed Boot Socks