I ordered 17, 36/37. My standard shirt size is 16-16.5, 36/37, but 17 fits me better for a slim fit. I'm 6ft 1in and 255lbs. I usually find IZOD to be comfortable for bigger guys (like me).
INFLATION Bamboo Shirts Sleeve Elastic Men's Clothing in Shirts
45 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
Men'S Long Sleeve Polo Shirt - Slim Fit, Stretchy, Breathable Collar
43 Review