The front part fit very tightly against my foot; uncomfortably so.  I could have possibly worked around that, but the reason I returned them is the strap/buckle.  The strap on the outside of my foot was very loose, and the inside strap was very tight.  In order to equalize them at all, I had to pull on a tiny strap attached by a small piece of elastic.  I would have had to do that every time I put on the sandals, and it wasn't quick.  I don't see that little piece of elastic holding up, and too much time and adjusting to get the sandals on.