The Marmot Women's Guides Down Vest is a popular choice for women who want a waterproof activewear vest that provides excellent insulation. This vest is made from a durable polyester fabric that is both water-resistant and windproof. It features a full zip closure and a stand-up collar for added protection. The vest is filled with 700-fill-power down, providing superior warmth without adding bulk. With its stylish design and high-quality construction, it's no wonder this vest is a best seller on Amazon.