I bought this during Prime lightening deal on Jul 15 for my wife. Since she was traveling, she couldn't try until Aug 19. She wears fitflop US 8 (EU 39)  but this one doesn't fit her. It's at least 1 cm short. I can't believe it !! This is a standard product & never imagined that there would be any problem in the size. The return window elapsed on Aug 18 so I can neither return nor use it.<br />Really frustrating experience. I would never buy shoes from Amazon