unlike most, i found/find myself wondering if my (ever popular clerical gray) 3A was/is a tad too large.
took some crappy pics to find out.
for reference, i'm a 38 (5'9"/150) and i ordered the 40.
it's a little longer than i expected, and tends to billow out on the side panels, but i have to remind myself that it's a cardigan, not a skiing sweater.
rulers don't lie.
big thanks to zissou for putting all of the time and effort into this.