If you label a shirt as being extra slim, I expect more than a 2-3" drop, which is what CT ESF shirts are. In my mind Regular fit = 0-1 inch drop Slim fit = 2-3 inch drop Extra slim fit = 4-6 inch drop Not to mention the fact that the 15 neck shirts have a 38 inch waist (measured 20cm below armhole). Usually I like my shirts to have 3-4 inches of "room". That would mean I would need a 34" waist. And this is their second smallest size in their slimmest fit.