Navy sling back kitten heel.

Salvatore Ferragamo made in Italy. Oddly the size says 10 AAA but I am an 8.5 and they fit perfectly, so I’m confused by this. I put an image of them next to one of my other 8.5 shoes for sale. I had a pair of Ferragamo that were a 9 and they were too big. Lmk if you have any questions.