These Ladies Lite Lourdale Socks in Grey boast an impressive 1.6 TOG rating, making them four times warmer than a basic cotton sock. They give you the ideal balance between thickness and warmth, allowing you to enjoy long-lasting comfort in your casual shoes all winter long. Soon after we launched our famous Original socks, we set out to create the warmest thermal sock for more casual-fitting footwear. Following twelve months of testing, development and research, the Heat Holders Lite thermal socks were born. Heat Holders thermal socks are sure to keep your feet warm on even the coldest days. We believe that whatever you’re doing, inside or out, you should feel comfortable and content so you can enjoy life to the full. Size: UK 4-8, EUR 37-42, US 5-9. Length: Crew length socks. Fibre Composition: 93% Acrylic, 6% Polyester, 1% Elastane. Machine Washable at 40°C. Heat Holders can be tumble dried but are happiest when line dried. In a range of colours and patterns, designed as a medium thick, mid-weight sock for casual shoes and boots, when regular Heat Holders socks are just too chunky for your footwear, then these Heat Holders 1.6 TOG Lite Patterned and Striped Socks will fit the bill... and in your shoes! They’re made from the same thermally efficient, Japanese-designed yarn as the full thickness socks, but with less dense bulk and shorter loops to the pile lining. The looped pile of every sock is then intensively brushed, giving the surface not only superb softness, but a bed of fleece fibres that can trap more warm air, holding it in those fibres and close to the skin, which allows the socks to keep your feet warmer for longer, proven to be more than 4x the warmth of a basic cotton sock. For your even closer-fitting shoes, perhaps try our minimum thickness SOCKSHOP Heat Holders 1.0 TOG Ultra Lite Plain Socks. 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; Heat holding brushed pile lining; Medium thickness, TOG rated 1.6 for proven warmth; Over 4x warmer than basic cotton socks Machine washable at 40°