rpantelisI can kinda comment. I have the Kailash long-sleeve quarter zip in XL. I'm 72", 210 lb, 36w, 43c, 35 arms. The fit on me is loose but not baggy. Plenty of arm length to use the thumb holes. I've found that this top and the beanie tend to stretch out after a bit of wear. I'm in between sizes and usually get the larger size if I'm not sure but I'm pretty sure I would have been fine ordering the L and I'm happy with the XL.