Redtag Mens Striped Extreme Thermal Socks With Grippers (2.45 Tog) Acrylic, Polyester, Elastane Mens thermal socks with 2.45 tog and floor grippers. 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.