The first pair I ordered were my size, 8.  They were much too big.  Retuned them and went down to a 7 1/2.  They arrived today.  Seem to fit much better.  I have a narrow foot, especially in the heal.  And they seem to fit fine.  Although I haven't worn them out yet.  So I can't make a real assessment yet.  I do wear other Vionic's all of which are sandles.  So these are the first closed sneaker type.  I bought these for my upcoming trip to Spain.  I'm expecting them to be very comfortable. I suffer with PF and just sore feet in general.  So keeping my fingers crossed!!