Winter midlayer, standalone at camp, packable warmth for backcountry rest periods the Cerium is alpine proven. Driven by Arcteryx’s obsessive attention to detail, they refined the design, sourced sustainable materials, and kept its exceptional warmth-to-weight ratio.

Responsibly-sourced 850 fill down with Coreloft synthetic utilized in areas prone to moisture provides premium insulation. The outer recycled 15D Arato nylon is light and durable, a bio-derived liner reduces petroleum use, and an insulated StormHood extends protection.

Fit: Fitted