The women’s Nike Therma-FIT Synthetic Fill Running Vest is your cold-weather sidekick to keep you warm during your next run or walk. The Nike Therma-FIT Vest manages your body’s natural heat as you warm up or cool down during a workout using poly-fill baffles at the front and back for lightweight warmth and performance. Running in cold weather is an ongoing balance between hot and cold. The Therma-FIT vest keeps your core warm, while a full-zip front lets you control your airflow as your body temperature fluctuates. When it’s time to bundle up, bury your neck and chin into the collar where a side-out fleece material gives you soft and cozy coverage. Plus, zippered hand pockets keep valuables secure or give you a place to warm your hands in between sprints. This women’s running vest looks as good as it performs with stylish ribbed side panels that stretch so you can move freely. Reflective elements make this a great outer layer for running in low-light conditions and the hem hits right below the hip for ideal coverage and warmth. On days when you need the extra layer without the bulk, throw on the warm and functional Nike Therma-FIT Synthetic Fill Vest. Upgrade your winter running kit. Check out our guide on the best winter running apparel.