I bought a Dark Tundra pair.  I wear size 12M in women's shoes and slippers and the previous reviews were correct, they do run true to size.  They feel wonderful and warm so I don't have to wear socks with them when it is near freezing outside.  The sole is made well and great for quick runs outside to bring in the potted plants or morning paper. I would not wear them out and about shopping since these are slippers and not outdoor type shoes. Love them and will buy another pair soon!