The Arc'teryx Cerium Jacket is a high-performance down midlayer built for climbers, skiers, and mountain athletes who demand lightweight warmth without compromise. Ideal for cold, dry conditions, it uses premium 850 fill European white goose down for exceptional loft and insulation. The Down Composite Mapping technology strategically places Coreloft synthetic insulation in moisture-prone areas, ensuring you stay warm even when damp. Its outer fabric is a recycled 15D Arato nylon with a durable FC0-DWR treatment for light moisture resistance, while the 20D plant-based Arato liner enhances packability and reduces environmental impact. Designed for fitted wear, the Cerium layers seamlessly under a shell but also performs excellently as a standalone piece in milder conditions. Packed with features to enhance alpine functionality, the Cerium Jacket includes articulated patterning for freedom of movement, an insulated mid-height collar to seal out cold drafts, and stretchy cuffs for comfort. The reverse coil front zip provides a sleek finish and added durability, while TPU zipper pulls reduce noise and improve grip in cold conditions. Two hand pockets and an internal zippered security pocket keep essentials close. The adjustable hem drawcord traps warmth and blocks wind, and the included stuff sack allows for easy, compact storage in your pack. With its outstanding warmth-to-weight ratio and thoughtful design, the Cerium Jacket is a go-to piece for fast-moving mountain missions. Arc'teryx Cerium Jacket Features Recycled 15D Arato outer 850 fill European white goose down, min 90/10, RDS Coreloft 80 (80 g/m2) Synthetic Insulation FC0-DWR (Durable Water Repellent) finish Two hand pockets with zippers Internal zippered security pocket Reverse coil centre-front zipper Adjustable hem draw cord Stretchy cuffs Includes stuff sack Fit: Fitted. Weight: 300g
