Heat Holders Twist Thermal Socks Feet need to be warm on the coldest of days so pull on a pair of Heat Holders the ultimate thermal sock. These are the warmest and softest socks around keeping your feet warmer - for longer! With a bunch of great colours and marl patterns to choose from these socks offer the best when it comes to warmth and style. Thick chunky with a massive tog rating of 2.34 they are over 7X warmer than the basic cotton sock (0.33 tog)! What is a TOG rating? It is a textiles measure of a products thermal ability in basic the higher the TOG rating the warmer the product will keep you! Heat Holders TOG Rating is so high because they have been made from a specially developed advanced insulating thermal yarn which works to provide high performance protection against the cold - along with superior moisture breathing abilities! As well as this the Heat Holders Loops produces a unique pile of cushioning which holds in even more warm air and keep your feet fully comfortable and supported throughout the long day. These extreme socks have an expert brushing process causing the inside of the socks to be not only sensationally soft but also helps to maximise the amount of warm air held inside close to the skin making your feet warmer for longer! For even more comfort Heat Holders' creators have also added their comfortable leg feature helping to avoid restriction and pressure hot spots.