The Smartwool Hudson Trail Fleece Half Zip combines the natural comfort of responsibly sourced Merino wool with synthetic durability, creating the perfect companion for cold-weather trail adventures. This men's outdoor sweater features a thoughtfully designed 12-inch front zipper with semi-locking slider that lets you fine-tune ventilation as you heat up on the ascent, while the anti-chafing chin guard keeps you comfortable when you're zipped up against mountain winds. The Merino wool blend naturally regulates temperature and resists odors even after long days on the trail, making this hiking fleece an essential piece for your cold weather outdoor wardrobe that performs as good as it looks.