The Outdoor Research Women's Transcendent Down Vest is a top choice for women's sleeveless lightweight safety packable activewear vest. This vest is made from 100% polyester and filled with 650-fill down insulation, providing excellent warmth and comfort. It features a zippered front, two hand pockets, and a stand-up collar for added protection. The Transcendent Down Vest is also packable, making it easy to carry and store when not in use. With its high-quality materials and reliable performance, it's no wonder that this vest is a best seller on Amazon.