I really wanted to like these sandals, since I'm a barefoot/VFF kind of guy.  They do feel very good on the feet in terms of having a thin yet durable sole.  Maybe it's just me, but getting them to fit right was a nightmare.  The big toe strap is pretty tight, and I simply could not find a way to adjust the straps so as not to get horrible chaffing and blisters.  I tried loose, I tried tight, I tried a compromise between the two... The material they make the straps out of really just loves to hit the wrong spot and rub until you have to take them off.  I've tried wearing them on different occasions to let my foot heal, sure enough same result.  As a side note I was not very tough on these.  For the positives they are very lightweight, flexible and packable... all great attributes however if you can't wear the sandal they are useless.