When clouds are moving in and the wind starts to pick up, we throw on our On Core Jacket and step through the door to log our daily miles. The DWR coating on the durable nylon material protects us from light rain and stiff winds, allowing us to put in those training miles regardless of the weather. Front and back vents keep us cool as the miles add up, and stretch fabric allows for incredible freedom of movement whether we're running on the road or on the trail.