Gelert heat slip socks one pack ladies standard cotton socks allow heat that is generated from your body to escape to the surrounding environment these gelert heat slip socks one pack help to insulate your feet keeping them warm and toasty so you can say goodbye to cold feet ladies socks thermal construction slipper sock style fleece lining anti slip soles 90 acrylic 5 nylon 4 polyester 1 elastane machine washable black ladies 4 8