I completely echo all the positive things the others have said. I LOVE THEM!!!  I'm about to order 3 more pairs & was actually excited that they have come out with new colors/patterns this year. :-)  I'm still wearing my first pair from 3 years ago along with 2 others but the foaminess does squash down with time.  Even then they are more comfortable and better fitting than any other flip flops.  The insoles have kind of a sueded surface so you don't feel sweaty too. I wear them in the winter with socks.  I think they are the most comfortable shoes I've ever had.  I've worn them all over NY, DC, Atlanta and elsewhere with no problems.  Nice that they do such a wide range of size as I'm a 5.  They are not the cheapest flipflops but I've wasted money buying something that looks similar & it did not compare so didn't really wear them.  Just buy these you'll be glad you did!!!