SmartWool Lightweight Zip Top - Men's - $84.95

The Smartwool Mens LightweightZip Top is like the caped crusader of the baselayer worldat any time, and in any conditions, its ready to wick moisture, dry in a flash, and naturally fight odors thanks to its soft, stretchy merino wool construction. Flatlock seams give it next-to-skin comfort and the front zip aids in venting when you overheat. - $84.95