Heat Holders Lite Long Socks Purple The Heat Holders Lite Long Socks are the ultimate thermal sock with a Tog rating of 1.6, giving you warmth and comfort for your feet with a fashionable twist. The Lite Long Socks is a long length sock with medium thickness to allow a perfect fit into everyday casual shoes. The Lite Long Socks offers breathability and wicks moisture away from the foot as well as an intensely brushed long pile inside that is incredibly soft and helps to hold warm air against the skin for longer to encourage support and protection.