The benchmark against which all others are judged, the 200 Oasis Leggings with Fly are icebreaker's ultra-comfortable base layer bottoms that make the perfect foundation for your everyday cold-weather layering system. Made with 100% merino wool jersey fabric that’s breathable, insulating, and odor-resistant, the Oasis features a slim fit and gusseted construction for unrestricted freedom of movement. The brushed elastic waistband and flatlock seams throughout eliminate 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.