Embrace the elements with Smartwool's Classic Thermal 1/4 Zip Sweater, a heavyweight base layer perfect for cold-weather adventures. Designed with long sleeves, this sweater is crafted from 100% responsibly sourced Merino wool and features a solid black pattern. Made with shoulder panels and flatlock seam construction, it ensures comfort and reduces chafing. Care - Machine wash and tumble dry. 100% Merino Wool.