When you need to be certain that you’ve got warm feet and legs, it’s got to be Heat Holders! Maximum thickness SOCKSHOP Heat Holders 2.3 TOG Original Patterned Long Socks are the warmest socks that Heat Holders produce — over 2x warmer than an ordinary thermal sock, over 7x warmer than a basic cotton sock! The longer, knee-high leg design and thick lining is just the thing for keeping legs insulated, and especially suitable for boot wearers. That these patterned design Heat Holders look great too is almost a bonus! The secret to that famous Heat Holders’ thermal performance is the advanced Japanese-designed thermal yarn they use, along with a UK patented long looped cushion pile that undergoes an expert brushing process to create thousands and thousands of super-soft fibres from cuffs to toes. That thick cushion of fibres (besides feeling wonderful) maximises the amount of warm air held inside the socks and close to your skin, hour after hour. For lasting leg warmth. Heat Holders in partnership with Scleroderma & Raynaud's UK. SRUK is the only UK Charity dedicated to improving the lives of people with Scleroderma and Raynaud's phenomenon.