The sizing is true to standards.  I've purchased Crocs sandals before, but never 'shoes', and was a bit concerned after reading reviews regarding size.  However, I typically wear an eight, and that's what I purchased here.  They fit quite well, both with socks and without.  The Neria is very comfortable.  The shoe doesn't quite come up as high as I had expected, but it's not concerning.  I plan to purchase these in black as well.  I may end up ridding my closet of all my other shoes and replacing with only Crocs, given their extensive collection of styles.  Crocs are truly the only shoes that do not hurt my feet at all - even when compared to my $200 athletic shoes and high-end cork-sole shoes.  The only thing I have to say that is even remotely "negative" is that these would not make good shoes for ninjas... they squeak a little sometimes.  ;)