The photos of these slippers give the appearance of a well-fitting slipper with a plastic/rubbery bottom.  I'm very disappointed.  They are super-wide and my 8M feet slide side to side in them.  The bottom is fabric.  :(  I will wear them, but only when I will not be walking around much.  I did machine-wash them, and they came through just fine, and they are warm, so I will use them.  I just wish they fit better and were more durable.