For years I wore Ausssie Sandles, which is what these are without the back strap.  Once you get used to them they are incredibly comfortable.  I had a hard time finding them and was delighted to find these with the straps.

I'm editing this article as I've now had a pair I wore regularly for over a year.  With the strap I can walk miles in them.  I usually where them except when I go work out.

They also allow air circulation to your feet which help prevent and cure fungus.

I'm able to wear these and walk seriously.  I've used previous products without the strap and with the
strap they're great.