Heat Holders Ladies Home Sleep Feather Tot SocksHeat Holders Yarn - Our Specially developed thermal yarn provides high performance insulation against cold with superior moisture breathing abilities. Heat Holders Loops - Innovative knitting technology produces our unique, extra long looped cushion pile to hold in more warm air, increasing the TOG rating. Heat Holders Brushing - Finally, our expert brushing process maximizes the amount of warm air held inside each sock for total warmth and all day comfort. Heat Holders are Scientifically tested to be over 7x warmer than a basic cotton sock! Heat Holders Tog rating being 2.34 whilst a basic cotton sock only measures at 0.33 Tog. Heat Holders Slipper Socks - The Rubber Sole at the bottom of the sock transforms our a sock into a slipper sock. Fantastic to use around house, defending against slippy surfaces like wooden floors, so that you can keep your feet safe as well as warm! Extra Product Details - High Tog Rating - Fluffy Bed Socks - Soft Cosy Socks - Rubbered Sole