The Nike Women's Aeroloft Running Vest is specifically designed for runners who want to stay warm without sacrificing mobility. It features Nike's Aeroloft technology, which provides lightweight insulation while allowing for breathability. The vest has a slim fit and is made with a water-resistant shell. It also has zippered pockets for storing small essentials. Whether you're going for a jog or participating in a race, this vest will keep you comfortable and protected from the elements.