I'm going to tell in eu sizes
I have a 44+ foot, have a 45 dvs shoe and a 43 shoe for under my suit, and a 44 oneil. Had a 46 ronix cell from usa, neede to tighten verry hard on the upper lace but it fitted right at my feed. Now I have a ronix one 43 boot, its a little to small for my feed but it starts to get longer inside, didn't head mold. I needed a 43 because ronix have no 44 in the one and the 45 was to big.