Heavyweight merino base layer bottoms with body-mapped ventilation for aerobic days in cold weather, the 260 Zone Leggings are warm, odor-resistant, and incredibly breathable. The Zone’s body-mapping technology combines a merino wool and LYCRA® blend with strategically zoned panels of eyelet merino mesh that actively controls temperature. The gusseted construction increases range of motion, and the brushed elastic waistband and flatlock seams reduce chafing. Inspired by nature, icebreaker harnesses the performance qualities of natural fibers to offer an alternative to clothing based on petrochemical synthetics. Merino is an annually renewable fiber that naturally resists odors, keeps you cool when it’s hot and warm when it’s not, and lets your skin breathe for comfort all day, every day.