At first, I didn't think I was going to like these briefs as the waistband was different from the Elance briefs I usually purchase.  It was a pleasant surprise to find that I like this waistband better than the other kind.  The brief seems to be true-to-size, and I like the white cotton -- though I wish the cotton were a little heavier weight.  Though not recommended, I do bleach them when washing them -- and, so far, they have come out just fine.  I would imagine that bleach most likely (after time) affects the elastic.