These mens extra thick insulated thermal socks are ideal to combat the age old problem of cold feet. They have a very high 2.30 tog rating with brushed inner fibres which traps warm air close to the skin compared to normal thermal socks for ultimate softness, extra warmth and protection from the cold. Whether pursuing outdoor activities, working within a cold climate condition, health issues or simply for that extra comfort throughout the cold winter months Heat Machine socks are ideal for the coldest winter days and nights.