My Gaerne SG10's and Balance oiled boots size eu 46 fit the same as my Sidi Adventures size eu 46 but the US sizes aren't the same one is and 11 one is an 11.5. The Eu sizes seem more consistent and the conversion charts to US sizes vary a lot. Both boots seem similar in width.
Born 10,000 years too late
Scientific Wild Ass Guesser:hmmmm