Women's 2XU Aero Jacket Waterproof Running Jacket. The full-zip jacket, made from water-resistant stretch fabric, offers all the protection you need for cooler runs at dawn or dusk. Back venting for improved breathability and ventilation. Front zippered hand pockets for storing cards or keys while you run. Reflective logos and trim provide 360-degree visibility in low-light conditions. Fabric: 100% polyester.