One of our best base layers for a climb toward the summit, this short sleeve base layer regulates your body temperature and protects you from the bitter chill. Made from merino wool, it is naturally anti-bacterial and odor resistant. Plus, the porous merino wool wicks moisture away, and is soft to the skin and itch free. All the seams have 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.