For a lightweight and packable vest, consider the Patagonia Women's Down Sweater Vest. This vest is filled with 800-fill-power Advanced Global Traceable Down, providing exceptional warmth and insulation. It features an adjustable hood that can be easily cinched for added protection. The vest is made from a durable and water-repellent shell fabric, ensuring that you stay dry in light rain or snow. It has a slim fit and a stylish quilted design. With its compressible nature, this vest can be easily packed into its own pocket, making it perfect for travel or outdoor adventures.