With its innovative, seamless, 3-D knit structure, Patagonia's Capilene Air Bottoms for Women offer amazing warmth and comfort range. An airy blend of 51% merino wool and 49% recycled polyester wicks moisture, resists odor and dries in a flash. Capilene Air is the most advanced baselayer Patagonia has ever made. It has the greatest range of warmth and comfort of any of their baselayers, insulates even when wet, dries quickly, and resists odors for day after day use.