I was concerned about buying the right size in a man's shoe. These are unisex. The man's Croc is wider and since I have a wide foot they work well for me. The size chart is very helpful. The tread on the bottom is rugged,more so then the woman's Croc.
The shoes are great. I wear heavy socks but my feet are not hot. They look so much better then the regular Crocs which I have two pairs of. I would recommend these especially. Love the leather instead of the holes at the top. I have a ongoing ( Since August 2010 )occurrence of  Plantar Fasciitis and these shoes allow me to walk. I also purchased the Night Splint from Amazon and it helped quite a bit. Just cumbersome to have to wear.