Nothing more to say. I ordered 20 inch for 38/39. The title of the product says "big and big". But apparently that doesn't apply to shirttails, which barely stay tucked in. Do yourself a favor and buy a shirt if you want. this.
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
Men'S Regular Fit Short-Sleeve Dress Shirts By Allsense - Look Stylish And Professional!
41 Review
H2H Mens Casual Slim Fit Short Sleeve T-Shirts Cotton Blended Soft Lightweight V-Neck/Crew-Neck
46 Review