The Nike Women's Aeroloft Running Vest is a top choice for women's thermal activewear, specifically designed for running. This vest is made from lightweight and breathable materials, offering excellent comfort and mobility. It features Nike's Aeroloft technology, providing targeted insulation to keep you warm without overheating. The vest also has reflective details for enhanced visibility during low-light conditions. With its innovative features and trusted brand name, it's no surprise that this vest is a popular choice on Amazon.