It's been over 5 years since I purchased my 1st one. It last about a year since I wear it everyday (work/out...all day). I wear a 6/6.5 and get the size 6 since it fits better than the 7. I have a wide foot but not flat and it fits just fine and I find it comfortable.

I am always weary of sandals like these because they always cut into my toes. The sole is comfortable though. Unfortunately I had to return them because they were too tight. I couldn't even get my other foot in them. So I definitely only recommend these to people with flat skinny feet.