these are wonderful and weightless flip-flops.  They were much more comfortable than I had thought they would be...the upper strap material is very silky and does not rub my foot at all--in fact I barely feel it.  The toe post/strap also is not noticeable or painful.  Just wish they had more colors that I liked (but with a black sole)--if they did I would buy about 10 more pairs of these to ensure I wouldn't ever be without them if/when I ever wear these out.