A go-anywhere base layer top featuring icebreaker's most versatile 100% merino wool fabric, the 200 Sonebula Long Sleeve Half Zip Hood insulates, resists odors and provides incredible breathability for active pursuits in any weather conditions. The raglan sleeve construction provides added mobility. Flatlock stitching throughout makes for a soft, chafe-free feel. 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.