Very comfortable and the straps have elastic goring on the inner side, which means they just can't be too tight, even if you have wide feet. Not particularly flattering, though. I have low arches and very long toes and they make my feet look even more flat and wide than they really are and my toes just go all the way over the top, but the size is good, they are not short, they just can't keep my feet close to the strap at the back of the heel. But the comfort is unquestionable. Good quality too and true to size. I wouldn't say they run big. I'm a 9.5 in shoes and 10 in sandals. These aren't any longer than my other sandals, maybe just a bit wide.