Our Ladies Original Jacquard Socks in Navy with Hearts are sure to keep your feet warm on even the coldest days. The inside of each of these thick thermal socks has been intensively brushed to feel super soft and trap warm air close to the skin keeping your feet warmer for longer. Whether you need extra warm socks for the great outdoors or simply to keep cosy at home, our Women's original thermal socks will make your life warmer. Size: UK 4-8, EUR 37-42, US 5-9. Length: Crew length socks. Fibre Composition: 91% Acrylic, 5% Nylon, 3% Polyester, 1% Elastane. Machine Washable at 40°C. Heat Holders can be tumble dried but are happiest when line dried. You can’t go wrong with the originals! No other socks can keep feet warm quite as well as Heat Holders, and that’s proven by their independent lab-tested TOG rating. Choose your perfect look from these women's’ SOCKSHOP Heat Holders 2.3 TOG Patterned Thermal Socks, in a whole range of colours and designs. The secret to Heat Holders’ superior thermal abilities is the advanced thermal yarn, specially developed in Japan, which is knitted up and given a unique, UK-patented long looped pile inside. That layer is intensely brushed, giving it a beautifully soft, deep fleece that can trap and hold on to the warm air in and around it, keeping it close to the skin through your day. You can ignore the cold, because Heat Holders keep you warmer for longer. 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. 1 Pair Pack Standard toe seams Standard cuffs Japanese-designed thermal yarn; UK patented long loop pile; Heat holding brushed fleece lining; TOG rated 2.3 for proven warmth; Over 7 x warmer than basic cotton socks Machine washable at 40°