The Nike Women's Aeroloft Running Vest is a sleek and functional sleeveless windproof vest that is designed for runners. It is made from a combination of polyester and nylon and features Aeroloft insulation for lightweight warmth. The vest has a slim fit and a full zip closure. It also has two zippered hand pockets and a stand-up collar. The vest is windproof and water-resistant, ensuring you stay comfortable in various weather conditions. It also has reflective details for enhanced visibility during low-light runs. Whether you're training for a marathon or going for a jog, this vest will keep you protected and stylish.