Hey pocketsquareguy, I'm 6'2", and prefer 35" sleeves and most stuff fits me great. I haven't tried any of the shirts, though. Cabourn isn't really made for the Japanese market. The Authentic Line (black label) is all made in the UK, and the Main Line (olive green label) is made in Japan. BUT, that doesn't necessarily mean the sizing is Japanese. The JP shops just tend to stock the 44-48 sizes, and not much larger.