The Icebreaker® Merino 260 Oasis Vertex Long Sleeve 1/2 Zip Alpine Geo pullover features flatlock and offset shoulder seams to help reduce friction. Its gusseted underarms offer added mobility and comfort. This long-sleeve pullover is designed with a mock neckline, a half-zippered front closure, and a droptail hem that provides added coverage. The Merino fabric is made from soft, lightweight, and naturally odor-resistant fiber that keeps you warm when it's cold and cool when it's warm.