The Columbia Women's Mighty Lite III Vest is a lightweight and packable option for women seeking a versatile activewear vest. Made from a combination of polyester and nylon, this vest is both windproof and water-resistant, making it suitable for various outdoor activities. It features Omni-Heat thermal reflective lining, which helps retain body heat and keep you warm in cold conditions. The vest also has a full zip front, zippered hand pockets, and a stand-up collar for added protection. With its sleek design and functional features, it's no wonder this vest is a best seller on Amazon.