I spent a half hour looking through the Amazon site until I settled on these boot type slippers.  I wanted slippers that I could throw in the washing machine.  I wanted slippers with a tough enough sole so that I could go out on my balcony or even outside if I had to in them.  I wanted them to be comfortable and warm.  These slippers are everything I wanted and more.  They are so comfortable and warm.  The bottom is thick and cushiony.  They fit well with socks.  I wear size 8, but I got the Large (Women's 9-10 US).  I always wear socks with my slippers and sometimes thick socks.  The size I chose is perfect for that whether I am wearing regular socks or thick socks.  They are very sturdy and well made.  I could not have found a better slipper!  I am glad that I spent the time to go through all those pages until I found them.  Love them!