The Nike Women's Aeroloft Running Vest is a sleek and functional sleeveless windproof thermal vest designed for runners. It features Nike's Aeroloft technology, which provides lightweight insulation and breathability. The vest has a water-repellent finish to keep you dry in light rain. It also has reflective details for enhanced visibility during low-light conditions. The Aeroloft Running Vest has a slim fit and a longer back hem for added coverage. Whether you're training for a marathon or going for a casual jog, this vest will keep you warm and comfortable.