Modern 618 vs 613
I am considering buying a new Schott Perfecto 618 or 613 and I have a few questions.
First, with a chest size of 37.4-7" and a rather slim and lean build, should I go for size 38? I'd be wearing a light sweater during the colder months of the year.
Second, is it true that 618 and 613 have a similar, if not the same, slim fit?
Thank you very much.