Optimum speed and protection for training in the mountains, the Fast Wing Vest is a superlight piece for racers or trainers who need a touch of protection from wind or light precipitation, but refuse to carry any extra weight. Provides wind Protection while it is super light, the fabric of this vest completely blocks wind, ensuring core warmth on the fly. How light is light? This vest packs down to the size of your palm. You won't need a bigger pack, this vest fits into the tiniest nook or cranny, even your pocket. Material: Polyamide.