THIS JACKET RUNS VERY SMALL. THE SIZE IS XL BUT IT IS MORE LIKE A MEDIUM IN SIZE; THEREFORE I LISTED AS SIZE M. You can read the reviews for yourself here: https://www.brooksrunning.com/en_us/featured/black-friday-cyber-sale/flash-sale/carbonite-jacket/221429.html. Stay visible and comfortable in this women's running jacket. Lightweight fabric resists wind and water while targeted reflectivity increases visibility, so you’re recognized for what you are: a runner in motion. Follows the shape of your body, with some breathing room for unrestricted movement. WORN ONCE; LIKE NEW. SELLING DUE TO SIZING DISCREPANCY.