Take a long ride in the coldest conditions. This long sleeve base layer regulates your body temperature during a winter ride. Made from merino wool, the porous merino wool wicks moisture away, and is soft to the skin and itch free. Plus, it's naturally anti-bacterial and odor resistant. The seaming has flatlock stitching to prevent chaffing and protect your body from uncomfortable straps rubbing against your shoulders. The layer is tight fitting, and cut long for a better fit.