Go-anywhere base layer bottoms featuring icebreaker's most versatile 100% merino wool fabric, the 200 Sonebula Leggings insulate, resist odors and provide incredible breathability for active pursuits in any weather conditions. The gusseted construction offers improved range of motion, while flatlock stitching throughout provides chafe-free comfort. 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.