5 foot 7 and 147 lbs. got a seize Med. It is perfect bagginess and not out of control baggy. very nice thicker weight. Oozes quality for a sweatshirt. But gap/banana is all I buy so do not really have a control group as to compare except for a free workplace sweatshirt which is a Russel, Russel I do not recommend.

Gaps sizes are stranger this year than ever, I order an XS in this, I am a medium and the XS fits great. My problem with it is that this black color shows marks like missing stain after a wash. I returned one and the replacement is a lot better but it still has this problem.