Arc'teryx Cerium 2027 – Mid Layer Jacket

Description

The Arc'teryx Cerium 2027 Vest is built for backcountry travelers who refuse to carry an ounce more than necessary. Blending premium down warmth with strategic synthetic reinforcement, it delivers reliable core insulation as a mid-layer under a shell or as a standalone piece at camp — all without weighing down your pack.

At its core is 850-fill European white goose down, one of the highest fill powers available, paired with Coreloft™ synthetic insulation mapped specifically to moisture-prone zones through Arc'teryx's Down Composite Mapping™ construction. The recycled 15D Arato™ outer is treated with an FC0-DWR finish for water repellency, while the 20D plant-based Arato™ liner keeps the overall weight exceptionally low. A trim fit slides easily under a shell, articulated patterning preserves freedom of movement, and an adjustable hem drawcord seals out drafts. Two hand pockets, an internal security pocket, and a stuff sack round out a feature set designed for efficiency.

Who it's for

This vest is the right call for ski tourers, alpinists, and fast-and-light backpackers who prioritize warmth-to-weight above all else. The hybrid insulation system means you're not sacrificing performance when conditions turn damp. If your kit lives and dies by gram count, the Cerium Vest earns its place.

FAQ

• Can I wear the Cerium Vest as an outer layer? It's designed primarily as a mid-layer, but works fine as a standalone in dry, calm conditions during rest breaks or around camp.
• How does the down stay warm when it gets wet? Arc'teryx uses Down Composite Mapping™ to place Coreloft™ synthetic insulation in areas most exposed to moisture, so warmth is maintained even when conditions aren't perfectly dry.