The ultimate thermal sock the heat holders mens original thermal sock boasts a 234 tog rating to keep your feet warm and comfortable on even the coldest daysdo you suffer from cold feet well make it a thing of the past with these heat holders mens original thermal socks even if you arent prone to cold feet you will love these comfy chunky socks developed from a heavy bulk yarn with long pile cushioning they have a massive tog rating of 234 the inner is brushed for super soft comfor