Patagonia makes this flagship baselayer material from a recycled polyester materials that goes the distance while adhering to the brand's green-based philosophy. Gladiodor® odor control coupled with the ability to wick moisture makes Capilene perfect as an active baselayer in cold weather and a stand alone piece in warmer climbs. In addition to being quick-drying, this fabric comes in four different weights designed for various conditions and activity levels.