The Marmot Women's Jena Vest is a lightweight and packable option for women seeking a versatile activewear vest. Made from 100% polyester, this vest is both windproof and water-resistant, making it suitable for various outdoor activities. It features 700-fill power down insulation, providing excellent warmth without adding bulk. The Jena Vest also has a full zip front, zippered hand pockets, and a stand-up collar for added convenience. With its high-quality construction and functional features, it's no surprise that this vest is a best seller on Amazon.