Dynafit DNA Training Jacket Men, very light 3/4 Nilit® Innergy zip top is made for all ski runners who want to tap into all of their potential during both training and racing. This training jacket has an impressively low weight and good stretch characteristics, as well as inside skin pockets and a close-fitting hood that keeps key areas warm on cold days. An elastic hem with silicon grippers keeps the jacket where it belongs. The special feature of this jacket is the Nilit® Innergy fabric that is designed to transform body heat into infrared rays, thus ensuring increased performance. In sum: Combined with the DNA pant, this is the DNA of winners.