I'm disappointed that they are not warm.  Unless I wear socks and my feet are warm to start out these slippers don't keep my feet warm.  I bought some down filled slippers several years ago that are wonderful.  However, they are worn out and held together with duck tape.  I wish I could find another pair like them as they are truly warm, get your feet warm when cold and keep them warm.  I wouldn't purchase these slippers :(