While the S2 Run Vest is the ultimate running vest that protects against wind and rain in the cold months. The vest has a protective and super elastic 3-layer elastic breathable laminate on the front and shoulder, and our special C3 material on the collar and parts of the back ensures quick and good sweat transport, so you stay dry and comfortable and never get cold and damp, either during or after activity. The close-fitting running vest has a high-elastic mesh panel on the back for great breathability. The great stretch also helps to give the vest optimal running fit without tightening. The inside of the collar is soft and sweat-wicking. The vest has a robust zipper with windproof and soft back and zipper-closed front pocket with elastic back, which adapts to the contents of the pocket - e.g. phone and card - as well as an open back pocket for gloves, hat and headband. Discreet but secure 3M reflective logos on the collarbone and waist ensure 360-degree visibility in the dark hours.