As a mid layer or standalone piece in cool, dry conditions, the Cerium LT Jacket offers exceptional warmth for little weight. Premium 850 fill down is resilient and warm, the Arato 10 shell provides lightweight durability, and Down Composite Mapping strategically places Coreloft synthetic insulation in moisture-prone areas. The women's specific trim fit with articulated construction moves with the body, and the sewn-through construction further reduces weight and increases packability.