Smartwool Men's Classic Thermal Merino 1/4 Zip Base Layer Pewter Blue Heather backcountry these boots are built to

these boots are built to conquer any terrain

With a full rim square lens shape inspired by surf culture

or anyone who needs to stay hydrated throughout the day

and neoprene jersey at side waists provide a comfortable and customizable fit for layering

In a notable modern update

Smartwool Men's Classic Thermal Merino 1/4 Zip Base Layer Pewter Blue Heather backcountry these boots are built toThe Smartwool Men's Classic Thermal Merino 1 4 Zip Base Layer combines functionality with enhanced aesthetics in a slim fit design. Made from 100% responsibly sourced Merino wool, this heavy base layer top features flatlock seams and shoulder panels to minimize chafing and maximize comfort during high intensity activities like skiing, hiking, and running. Its interlock knit fabric ensures excellent breathability, thermoregulation, and odor resistance,