Burton AK Wool 1/4 Zip Top - Men's - $99.90

There's a reason sheep can stand around in harsh weather without wearing outerwear. The Burton AK Wool 1/4 Zip Top combines serious insulating power with natural moisture wicking and odor resistance. Run it next to you skin on super-cold days, wear it as a mid layer, or even on its own during shoulder-season hikes in the high country. - $99.90