This is my first pair of FitFlops and I love them.  I just got a new puppy and do a lot of walking so thought I'd give them a try (might as well multi-task!). Super comfy and I can really feel it in my calves and hamstrings. Don't wear them too far when you first get them, you may want to build up.  I wear a 6.5 to 7, ordered the 7 and they fit very true. I know others said that they run big but I didn't have that issue.