I'm 6ft 1in with my stomach. ordered 3xl (the largest size they have). Let's just say I was afraid the zipper might not hold. I would say it's two sizes smaller than the shirt and three times the pants.
Gildan Performance Men's π Clothing and Shirts with Moisture-Wicking Polyester
44 Review
H2H Mens Casual Slim Fit Short Sleeve T-Shirts Cotton Blended Soft Lightweight V-Neck/Crew-Neck
46 Review
Men'S Regular Fit Short-Sleeve Dress Shirts By Allsense - Look Stylish And Professional!
41 Review
Calvin Klein π Herringbone Sleeve Men's Dress Clothing
50 Review