I mentioned these in a blog post a little while ago but they hadn't arrived yet. Now that I've had a chance to wear them they are so comfortable!
http://oldnavy.gap.com/browse/product.do?cid=55151&vid=1&pid=174290012
Way more than my Birkenstocks, which I find too heavy.
I'm going to get a pair for my mom! Especially great if you have a wider foot like me.