The Marmot Women's Jena Vest is a popular choice for those seeking a lightweight and packable vest with excellent warmth. This vest is filled with 700-fill power down insulation, providing superior heat retention without the added weight. The outer shell is made from a durable nylon fabric that is both windproof and water-resistant. It features a full zip closure and two zippered hand pockets for storing small essentials. The Jena Vest also has an athletic fit that allows for easy movement. With its high-quality materials and reliable performance, it's no wonder why this vest is highly rated on Amazon.