Men's 100% Merino Wool Long Sleeve Half Zip Heavyweight 100% merino wool base-layer top that can double as a light sweater 18.5-micron merino wool fibers for next-to-skin comfort Absorbs up to 30% of its weight in water without feeling damp Base layer for frigid temperatures, or light sweater in cool temperatures Flatlock seams for non-chafing comfort Short standing collar with zipper that extends to sternum Resists odors Size: XL Color: Navy Condition: Excellent Machine wash cold Dry on low