A nice touch is the 3XL has a relaxed shoulder seam placement.
Mens Funny T Shirts Drug Free Mostly Sarcastic 420 Graphic Novelty Tee for Men
The 3XL runs a bit generous, so you can size down if unsure.
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You will find that the 3XL runs true to size for bigger builds.
Wild Heart free soul Vintage Western T-Shirt | Cowgirl Boots Desert
A nice touch is the 3XL has a slightly dropped shoulder for style.
Gildan Mens T Shirts 5000 Solid Cotton Mix color Blank Tee S-3XL (6 Pcs)
This solid T-shirt works as a solo piece or under a button-down shirt.