I normally won't buy shoes online and this goes to prove why I shouldn't. I bought the size 9W as I had other Merrell shoes in the same size and they fit great. Unfortunately, these didn't. They were way too big. So, I returned them thinking the 8.5W would be the perfect size. I got those and they were small to the point my toes were curled up to fit in them. I'm not sure if there was an error at the factory or if this is how they fit. Since the difference in size should only be 1/8 of an inch, it doesn't make sense.