The Klimatex CHEIRON men's winter running vest is made of highly functional fabrics. The insulated parts on the front protect against cold weather. The rest of the vest is made of highly elastic material which has a brushed inner side for a nice and warm feel. The two side zipper pockets are covered by a flap. Thin elastic bands prevent heat loss. The zipper is backed with a flap that protects against wind and at the neck against scratches from the zipper. The vest contains reflective elements that increase visibility in bad weather and in the dark.