The Heat Holders Lite Thermal Socks offer exceptional warmth without the bulk of original Heat Holders, making them perfect for fitting into everyday shoes and trainers. These socks boast a 1.6 TOG rating, providing significantly more warmth than standard cotton socks, keeping your feet comfortable and cozy. They feature Heat Holders' specially developed thermal yarn for superior insulation and moisture-wicking, innovative knitting technology for extra-long looped cushion pile to trap warm air, and an expert brushing process for maximum warmth retention. Available in various stylish marl twist patterns, these crew-length socks are designed for ultimate comfort and warmth on cold days. Material Composition: 93% Acrylic, 6% Polyester, 1% Elastane. Care Instructions: Machine washable at 40°C, tumble dry or line dry. Sizes available: UK 4-8, EUR 37-42, US 5-9.