These have to be the best sandals ever made!  These are sandals that will impress you with their comfort, good heel support (to prevent any pronation tendencies or just fascilitate proper body alignmnent), no rubbing, and no squeeks when walking.  LOVE THEM!  They tend to run at least 1/2 size to full size large.  My son usually wears a size 14, but the 13 that we ordered fits him fine with perfect toe room to avoid hanging over the tip of the sandal. We were so amazed that we finally found a stylish and comfortable sandal, that we quickly ordered a back up pair.  Prior to this sandal, we had ordered Merrells, but these Clarks have them beat! -- Retired pediatric nurse