Well, I'm over 70 years old, about 6 feet tall and weigh 215 pounds. My XL Haynes Pocket cotton t-shirts are perfect for me. A bit loose but not a tent, sleeves hang to the elbows. About two or three inches from the bottom of the sleeves to the elbows. The bottom of the shirt is an inch or two below the "center of the buttocks". So aside from the fit, I'm very happy with these shirts. They are very comfortable and that is what you would expect from 100% cotton. The material is a bit heavier, definitely a lot heavier (thicker) than the last set of t-shirts I bought from Revain which were partly synthetic. and fits well, I couldn't ask for better t-shirts.
Hanes Sleeve T Shirt Large White Men's Clothing T-Shirts & Tanks: Premium Comfort and Versatile Style
33 Review
Ultimate Comfort: Discover the Comfort Colors Sleeve 6014 - X Large Men's Clothing, T-Shirts & Tanks
40 Review
Ultimate Comfort and Style: Minus33 Merino Wool Ticonderoga Lightweight Men's Clothing, T-Shirts & Tanks
43 Review
Men's XXL Super T Mockneck 👕 from Lands End - Clothing, T-Shirts & Tanks
32 Review