Arc'teryx Cerium

The Arc'teryx Cerium Vest is an ultralight, packable insulating layer built for alpine missions where weight matters. It pairs responsibly sourced 850-fill goose down with strategic Coreloft synthetic insulation in moisture-prone areas, delivering impressive warmth-to-weight performance and reliable protection when conditions turn damp. The recycled 15D Arato nylon shell is light, durable and dope dyed, while a high collar and adjustable hem help seal in heat.