They are very warm and keep my feet dry. However they have a very strange fit. The foot is too large and the shaft is so narrow I can barely get my foot in. I kept them because I did not have the time to return them and order something else because  winter weather struck with a vengeance. Ive stuffed them with insoles and that works fairly well except that I cannot wear socks with them because my heels slide up and down as I walk and pull my socks down so that the tops of my socks end up at my instep which is very uncomfortable.