I bought both a size 8-8.5 and a 9-9.5. I normally wear and 8.5 or 9 and I found the Ecco 8-8.5 just a bit too short. I could have made do but they were a little narrow in the width as well. The 9-9.5 are a bit long but the fit is far more comfortable. I have worn them daily since I got them a week ago and they offer very good support and stability for the foot. I have knee and back problems and these sandals give support that many other sandals do not. They are pricey but I'm sure I'll get my $$$ worth.