The Cerium Hoodie strikes an exceptional warmth-to-weight ratio whether deployed as a midlayer or worn as a standalone jacket. 850-fill goose down provides lofty, packable insulation, while strategic Coreloft™ placement keeps moisture-prone zones protected. Encased in a durable, wind-resistant recycled Arato™ nylon shell, it packs down into the small footprint of its included stuff sack.