I am 5 9 150 and waist size 29-31 depending on the garment such as jeans, stretch jeans, dress pants, sweatpants etc. I ordered 3 medium size black packs first and they fit great, I love wearing them under shorts for running or yoga. Medium size gives me a lot of space. I wanted to buy more so I bought 3 packs, 3 colors in a small size because I wanted them to be a little tighter like underwear to wear under jeans. I'm glad I found them, very happy with my purchase.
Gildan Performance Men's 👕 Clothing and Shirts with Moisture-Wicking Polyester
44 Review
INFLATION Bamboo Shirts Sleeve Elastic Men's Clothing in Shirts
45 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