I love these. I go through a pair every winter to keep my feet warm. These are not socks that you wear on shoes. They are socks that you wear around the house and for sleeping in.  My feet cramp in the winter when they get cold. These keep them toasty warm. By the end of winter, they have pilled from washing, and there is a start of a hole at the heals but they are the best that i've found for my needs.