The sizing seems to run about 1/2 size larger than the label.  My foot swam in my usual size (whole).  Going one size smaller didn't work as the heel is still big and the shoes kept flopping off and I couldn't walk in them.  I wanted to like these because the price was great, they're fairly nice looking, the plush interior is nice and I've been looking for a comfortable flat.  These probably fit better for people with larger heels, wider feet and who normally wear a half size.  I'd recommending going down a half size.