The first pair of these sneakers I bought were a size 7, which is what my fitflop sandals are.  I had read that these shoes run big, but the 7 was much too small.  I just got my size 8's, which is what I wear in my other shoes, and these fitflop sneakers are really tight!  I love the way they look ( I have the blue ones ) and they seem to be made really well, so if only they stretch out some I will be happy.  At the moment my feet are hurting and I've only worn them around the house!

January 11, 2013:  I wore these sneakers a lot in the summer.  They were super comfortable after they loosened up.  I will recommend them.