The Crest is skiwear pioneer Aether's most insulated jacket to date. It's engineered from a waterproof, triple-layer Japanese nylon, and loaded with 800-fill-power of goose down that traps heat close to the core, while remaining lightweight and easy to pack. It's kitted out with a host of mountain-ready features, from the ergonomic fit and helmet-accommodating hood to the integrated RECCO? rescue reflector, used by rescue teams all over the world.