Designed for the burliest expeditions, the Cinnabar -40° will quickly become your best buddy when summiting the highest peaks and braving unforgiving winter conditions. Built with a superlight, high tear strength shell with a durable waterproof coating, insulated with premium 850 fill power DownTek™ water-repellent down, and designed with body mapped, thermally efficient baffles, this bag has you covered when it counts.