91% Acrylic, 5% Polyamide, 3% Polyester, 1% Elastane Imported No Closure closure Machine Wash ? HEAT HOLDERS YARN - Our Specially developed thermal yarn provides high performance insulation against cold with superior moisture breathing abilities. ? THERMAL BRUSHING - Our expert brushing process maximises the amount of warm air held inside each sock for total warmth and all day comfort. ? 2.34 TOG RATING - With a 2.34 tog rating, your feet and legs will be 7X warmer than a regular cotton sock even in extremely chilly winter climates. ? HEAT HOLDERS LOOPS - Innovative knitting technology produces our unique, extra long looped cushion pile to hold in more warm air, increasing the TOG rating. ? THE ULTIMATE THERMAL SOCK - Let's just say if you are looking to keep your feet warm this winter then these thermal socks are the perfect addition to your sock drawer. Show more