Dior Wrap Sandals size M shows size 43 in receipt and indeed I had them on my 11-11.5 us size which equals size 45. Keep that in mind that it’s bigger but socks compensate that.
I didn’t use original socks.
Spring-Summer 2023
https://www.dior.com/en_us/fashion/mens-fashion/how-to-wear-it-the-dior-warp-sandal
No returns.
As is.