These sandals are amazing for plantar fasccitis!  I have a super high arch. The only problem is I ordered a 10 , and decided to keep them even though they fit a bit big. I am a manager in retail and I am on cement floors 8 hours a day. Ordered two more pair of vionics in different styles and these sandals are still my favorite. Order a 9 if you normally wear 9 1/2 to 10.