Redtag Mens Plain Long Length Extreme Thermal Socks (2.45 Tog) 100% Polyester Mens thermal socks with long length build and 2.45 tog. Soft brushed inner to hold more warm air close to skin, keeping feet warmer for longer. Advanced insulating yarn for high performance insulation. Choice of 3 colors. Sizing: US 7-12, UK 6-11, EUR 39-46.