A classic and comfortable pullover made with 100% merino jersey fabric and an easy-layering half-zip design, the Deice Long Sleeve Half Zip has essential comfort and everyday style. 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.