The Nike Women's Aeroloft Running Vest is a top-rated sleeveless safety convertible packable activewear vest that is specifically designed for running. It features Nike Aeroloft technology, which provides lightweight insulation to keep you warm without overheating. The vest has a zippered front closure, zippered hand pockets, and an internal chest pocket for secure storage. It is also convertible, allowing you to pack it into its own pocket for easy transport. With its sleek design and excellent performance, the Nike Women's Aeroloft Running Vest is a popular choice among runners.