The Nike Women's Aeroloft Vest is a stylish and functional sleeveless insulated lightweight vest that is perfect for running and other outdoor activities. It is made from a combination of polyester and nylon, providing excellent warmth and breathability. The Aeroloft Vest features Nike Aeroloft technology, which uses lightweight insulation to keep you warm without weighing you down. It also has laser-cut perforations for enhanced ventilation and reflective details for increased visibility in low-light conditions. The vest has zippered hand pockets and an interior pocket, offering convenient storage options. Whether you're hitting the pavement or hitting the trails, this vest will keep you comfortable and protected.