I have now purchased 4 of these shirts in different colors for my gym workouts. Shirts fit me perfect. I am 6'0 185 and purchased the XL. I am normally a L so you might want to go up one size.
Men'S Long Sleeve Polo Shirt - Slim Fit, Stretchy, Breathable Collar
43 Review
Calvin Klein π Herringbone Sleeve Men's Dress Clothing
50 Review
Gildan Performance Men's π Clothing and Shirts with Moisture-Wicking Polyester
44 Review
INFLATION Bamboo Shirts Sleeve Elastic Men's Clothing in Shirts
45 Review