At least they are too small for me. I'm 5'9" and 180 lbs. I always buy plus sizes shirts and all but these have plenty of room. Flannel. If you want to wear it under another shirt it will probably fit you. If you have a looser one If you like the shirt you can take one size up The material seems to be of decent quality.
Carhartt Workwear XXXXX-Large Men's T-Shirt β Original Clothing for T-Shirts & Tanks
34 Review
Ultimate Comfort: Discover the Comfort Colors Sleeve 6014 - X Large Men's Clothing, T-Shirts & Tanks
40 Review
Men's XXL Super T Mockneck π from Lands End - Clothing, T-Shirts & Tanks
32 Review
Ultimate Comfort and Style: Minus33 Merino Wool Ticonderoga Lightweight Men's Clothing, T-Shirts & Tanks
43 Review
Van Heusen Traveler Stretch Men's Shirt
47 Review
H2H Mens Casual Slim Fit Short Sleeve T-Shirts Cotton Blended Soft Lightweight V-Neck/Crew-Neck
46 Review
INFLATION Bamboo Shirts Sleeve Elastic Men's Clothing in Shirts
45 Review
Gildan Performance Men's π Clothing and Shirts with Moisture-Wicking Polyester
44 Review