Goodfellow & Co makes a shirt that works just as well for work as it does for weekends.
3 6 Pack Mens 100% Cotton Tank Top A-Shirt Wife Beater Undershirt Workout Shirt
This is a true men’s shirt, with armholes that don’t ride up when you lift.
QUINCE Mens Crew Casual Basic 100% Cotton T-Shirt Tee Black White Navy 1-3 Pack
A nice touch is the black tape inside the shoulder seams.
3 Pack 32 Degrees Men’s Cool Tee Short Sleeve Crew Neck Select Color Size
This tee is made for men, with a weight that drapes well, not too flimsy.