Had to return and order a larger size replacement, but overall very happy with these shoes.  They fit reasonably well and are never uncomfortable.  They have tolerated many miles of hiking and have held up well so far.  They are not for everyone and require getting your feet used to feeling what's under them more, but are a great concept and one that I really like, especially when paired with Injinji wool toe socks.  I am only giving 4 stars though because everyone's toe lengths are a bit differently.  For me the 2nd and 3rd toes are a bit short (the reason I had to order a larger size), and in a size that is comfortable for those, the 4th and 5th toes are overly long.  My wife has a pair as well, and in hers the pinky, which is too long for me, is too short.  Vibram needs to be willing to make custom versions of these shoes or at least offer a few varieties of relative toe lengths.