Ideal under a long shell or worn on its own at camp or during downtime, the Cerium Mid down jacket from Arc’teryx provides enhanced protection while remaining exceptionally warm and lightweight. The 850 fill-power goose down, sourced responsibly and combined with synthetic insulation in moisture-prone areas, delivers enveloping warmth. The Arato 15D outer fabric, both lightweight and durable, is made entirely from recycled nylon. The StormHood adds extra protection, the two-way zipper preserves freedom of movement, and the streamlined fit makes layering easy.