Smartwool Men's Classic Thermal Merino Base Layer 1/4 Zip Boxed men's baselayers Mapping strategically places different weights

Mapping strategically places different weights of synthetic insulation to maximize warmth and climate control

Its high-quality construction and zip-up design provide warmth and a timeless style that can be incorporated into any look

Features for maximum versatility include adjustable cuffs

Available in stainless and DuraCoat™ colors that won't peel

its hybrid construction holds up to snow

Smartwool Men's Classic Thermal Merino Base Layer 1/4 Zip Boxed men's baselayers Mapping strategically places different weightsThis enhanced Men's Classic Thermal Merino Base Layer 1 4 Zip features an improved fit for superior functionality and style. Crafted from 100% responsibly sourced Merino wool, it offers exceptional warmth as one of the heaviest base layers available. Designed with shoulder panels and flatlock seams, it reduces chafing and maintains comfort during intense activities like skiing, hiking, and running. Its advanced temperature regulation keeps you dry and