Kari Traa’s RHETT HALF ZIP is a high-energy hybrid base layer, built for soft warmth and technical comfort during alpine pursuits. This base layer is perfect for cross-country skiing. Its functional DriRelease fabric combined with two weights of strategically placed 100% merino wool panels, provides you with breathable warmth. The result is a stretchy, structured, easy-layering top with a half-zip neck for extra air flow.