Womens S1 Run Jacket is suitable for the exact protection you want on your run throughout most of the year - simply adjust the insulation according to the weather with the layer you choose to wear underneath. Stretchable side panels ensure a good fit and efficient ventilation in the moderately close-fitting jacket. The inside of the collar is soft and sweat-wicking. The jacket has a sturdy zipper with a windproof backing and a zipper-closed front pocket with an elastic back that adjusts to the contents of the pocket - such as a phone and a map. Discreet but secure 3M reflective tape on the collarbone and back ensures 360-degree visibility in low-light conditions. Optionally, choose the Hi-Vis vest for added safety.