A versatile base layer top perfect for everyday comfort and year-round layering performance the 175 Everyday Long Sleeve Crewe features 100% merino wool rib fabric that’s soft breathable and odor-resistant. The stretchy slim fit provides easy-layering performance ideal for any active adventure.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 dayevery day.