This lightweight single layer jacket is perfect for year round comfort from spring evenings to sunny winter days. Sustainably made with our AlpacaTek® Technology that offers warmth without the bulk, through unmatched thermoregulatory capabilities. With a purposely crafted design featuring a longer fit for added comfort and three upward sloping panels along the sides, arms, and body, allowing for maximum breathability and moisture wicking ability keeping you comfortable during every activity.