Valentino Rockstud Rubber Slide sandals size 40

Selling 100% authentic Valentino Rockstud rubber slides in black size 40. Missing one stud on the far end and have a few scuffs on the sides (see pics). * size is 40, however I feel like this would be a US 9. I’m an 8-8 1/2 and these are only a little big on me (I uploaded a pic wearing them). *