I picked these up as a gold box deal because I needed something to wear in streams / lakes while taking the dog swimming.  These stay on my feet much better than flip flops.  The laces are secured by a slip pinch device and they didn't slip while walking around in water.
I normally wear a 14 wide or 15 regular, but I bought these as a 14 and they fit fine.  If I was going to wear socks, they wouldn't fit.
I would buy these again mostly because they don't look as silly as "aqua socks".  I wish I would have had them a few years ago while on a float trip.