I really like that the gray color feels grounded and practical.
Lacoste Men’s Cotton Regular Fit Crew Neck T-Shirts (3 Pack)
This tee is tailored for men, with broader shoulder seams that actually line up.
NWT Tommy Hilfiger Mens Regular Fit Solid Pocket Short Sleeve T-Shirt Jersey Tee
The crew neck on this is soft and relaxed, making it easy to wear casually.
CAT Caterpillar Men’s Relaxed Fit T Shirt, Color Gray, Size Medium, Durable. 
This T-shirt’s solid design is all about simplicity and practicality.
$50 KAPPA Black/White ESTESSI Regular Fit Short Sleeve Logo T-shirt Jersey NWT
The graphic print on this shirt uses a distressed effect for a lived-in feel.