Ladies Heat Holders in a Marl Fleck Design These come to mid calf height, ideal for wearing inside boots and willies, guaranteed to keep your feet toasty warm. We have these in three other colours, please see them in our ebay shop. Only the originals will do! When temperatures fall, pull on this pair of ladies Heat Holder thermal socks and enjoy the extreme warmth that these seriously chunky socks will provide. The ultimate in thermal socks, these Heat Holders have a massive tog rating of 2.34 keeping your feet fully insulated with the specially developed extra heavy bulk yarn. The inside of each sock has been intensively brushed, giving them a sensationally soft feel, while holding more warm air close to the skin therefore keeping feet warmer for longer. The long pile cushioning, means these socks will not only help keep feet cosy but protected and supported too.