
I like the Helly base layers for two reasons: first, they are well made, second, they are thin enough to wear under jeans and thick enough to wear them to wear under jogging 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 Long Sleeve Polo Shirt - Slim Fit, Stretchy, Breathable Collar
43 Review

π Nantersan Placket Raglan Tee - A Casual Must-Have
52 Review