A nice touch is the solid colorway, letting the soft fabric take center stage.
Mark Martin 5x Iroc Champion T-shirt Made in the USA Size S to 5XL
An unbranded shirt like this one is a must when you want simplicity.
909B3 Champion T137 Authentic Apparel Baseball Tee Small MD Blue & White
You will see the shoulders have a bit of extra room, a comfort for men.
Ultra Street Fighter IV Final Round Tournament Shirt Mens Large Capcom Decapre
You will find that this solid tee works as a base layer for cooler months.
909B3 Champion T137 Authentic Apparel Baseball Tee Small MD Gray & Blue
This one is tailored for men, so the chest measurement runs true to size.