Update 1/4/13: They fell apart after a month or two of wear.  Yes the size was probably too small but I followed the size guidelines.  I wear my FitFlops a size small and have never had one outright break on me, at least not before 2 (looong) summers of daily wear.
Original Review: I have been a huge FitFlop fan for the past couple years, and they're all I really want to wear - resulting in a closet full of unworn 4" heels... but that's another topic!
Finally, they've come out with 2 men's versions.  This one I find more universal and fashionable than the others, and compliments most men's casual summer wardrobes.
As with other FitFlops, but more severe in this instance, the base of the strap around the midsole area is not wide enough.  In order to break them in, one needs to wear them daily for a couple weeks.  Usually the base of the strap starts pulling away from the soles.
The fit is also not perfect - since I am a huge FitFlop fan I have now purchased several pairs for myself and 3 others with different genes, and the result is the same - too long in the toe area and too short in the heel area, and a bit narrow for some across the midsole strap.
FitFlop, please fix this!  An adjustable band or a little elastic on the sides of the midsole strap would be perfect, as well as the length adjustments on the toe and heel areas.
However, the shoes fit well enough to still be great, they work the leg muscles harder PLUS they are the most comfortable shoes I've ever tried (much more comfortable than any kind of sneaker, etc) and are the only thing I can count on to not hurt my feet after being on them and walking 10+ hours a day.