These slippers are extremely comfortable - so comfortable I wear them all the time when I am home (and frequently forget I have them on when I go out - a mistake which never fails to irritate my wife). My feet never seem to feel either too hot or too cold, and the almost treadless foam soles mean that they can be worn outdoors briefly, if its not wet, muddy, etc., and they won't pick up dirt to track back inside. I've had a black pair I bought several months ago, and I just bought these for their different color.