The Marmot Jena Vest is a lightweight and packable sleeveless windproof vest that offers exceptional warmth. It is filled with 700-fill power down insulation, which provides excellent heat retention. The vest features a durable water-repellent finish to keep you dry in light rain. With its athletic fit and stylish design, it is perfect for layering over your favorite activewear or wearing on its own during mild weather conditions.