I bought 3, I wear shirts with jeans and work boots, but can still look normal and keep cool on hot days. I never lose a fountain pen from a zip pocket. I'm 6ft 1,215lbs so ordered 2x, not tight at all, still enough room to breathe.
Gildan Performance Men's π Clothing and Shirts with Moisture-Wicking Polyester
44 Review
Men'S Long Sleeve Polo Shirt - Slim Fit, Stretchy, Breathable Collar
43 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