Just to give a sense of size and fit, I'm 6'1" and 250, and a XXL fits pretty well. A little long in the sleeves and the torso, but only a little, and it's otherwise pretty good.
Gildan Performance Men's π Clothing and Shirts with Moisture-Wicking Polyester
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Men'S Regular Fit Short-Sleeve Dress Shirts By Allsense - Look Stylish And Professional!
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Calvin Klein π Herringbone Sleeve Men's Dress Clothing
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H2H Mens Casual Slim Fit Short Sleeve T-Shirts Cotton Blended Soft Lightweight V-Neck/Crew-Neck
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