The standard complaint goes with NB shoes in general, that it, the sizing is about a full size down from every other shoe i've ever owned. Another thing to warn about is that these shoes have mesh panels, so air does flow right through them, as well as water. if its raining out or even damp expect for your feet to get wet.

despite that, they do fit well - a bit narrow but i have narrow feet - and they are fairly light.

UPDATE:
the foam in the top of the heel of the left shoe has bunched up and now putting pressure on the back of my foot, its not very comfortable.
I'm also noticing now that if im standing for a few hours without moving much, my back hurts. i have 3-4 pairs of shoes and wear them equally, and these are the only pair that hurt.

Update 2:
i finally got fed up with the foam bunching and decided for minor surgery. hoped i could unroll the foam and maybe reattach it. nope, its not just bunched up but its come apart inside the shoe. not savable. $70 down the drain. not even a half a year old before i gave up on them.