The Marie Claire Thermal Knee Highs are designed to keep you warm and comfortable on colder days. Made with a soft fleece lining and a 200 denier finish, they provide extra warmth and a cosy feel while still looking sleek. Knee high length Thermal fleece lined for added warmth 200 denier finish Super warm and comfortable These women’s thermal knee high socks are a winter essential. Perfect for everyday wear when you need extra warmth, they combine comfort, durability and style in one practical pair.