Fiber composition: 93% acrylic, 6% polyester, 1% elastane Advanced thermal yarn More than 4X warmer than a basic cotton sock! Sensationally soft Non-binding, and diabetic friendly Size: Women's 5-9Also fits: Men's 4-8Women requiring size 8-13 can look at Men's styles.Heat Holders LITE thermal socks have been designed to provide our famous thermal protection and comfort in a medium thick profile, ideal for wearing in casual shoes and boots!Compared to our ORIGINAL, maximum loop length thermal socks with 2.34 Tog rating (Thermal Overall Grade), Heat Holders LITE thermal socks have a medium loop length with 1.60 Tog rating.Keep feet warm on the coldest of days and pull on this pair of festive Christmas pattern, medium thickness, crew length Heat Holders LITE for women, the warmest thermal sock.Heat Holders are made from a specially developed heavy bulk yarn which has extreme thermal qualities. With medium 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 are non-binding; they are also diabetic friendly and provide relief for cold feet due to circulation problems.Fiber composition: 93% acrylic, 6% polyester, 1% elastaneAdvanced thermal yarnMore than 4X warmer than a basic cotton sock!Sensationally softNon-binding, and diabetic friendlySingle pair packImported