![Smartwool Men's Classic Thermal Merino Base Layer Pattern 1/4 Zip Laguna Blue Heather Color Shift](http://jaxgoods.com/cdn/shop/products/66-646741-6045776-image-1620171_640x640.jpg?v=1683235788)
Men's Classic Thermal Merino Base Layer Pattern 1/4 Zip
Our new Men's Merino 250 Base Layer Pattern 1/4 Zip has been rebuilt to provide you with a more functional and fashionable garment. As one of our heaviest base layer tops and best base layers for cold weather, this garment uses 100% responsibly sourced Merino wool, shoulder panels, and a flatlock seam construction to help minimize chafing as well as help keep you comfortable and temperature regulated as you enjoy high-intensity skiing, hiking, running, and more.