The Arc'teryx Cerium Jacket is a lightweight, packable down jacket built for alpine missions and backcountry adventures. It combines 850 fill European white goose down with Coreloft™ synthetic insulation in moisture-prone areas, delivering warmth without weight. The recycled 15D Arato™ nylon shell is durable and wind resistant, while the bio-derived liner reduces petroleum use. A fitted, articulated cut moves with you and layers easily under a shell.

It includes a removable stuff sack, two zippered hand pockets, an internal security pocket, and stretchy cuffs. The FC0-DWR finish repels moisture, and the adjustable hem seals out drafts. Certified to the Responsible Down Standard and made with bluesign® approved materials.

Key Features

Highlights

• Moisture-resistant outer face fabric
• Breathable
• Great warmth-to-weight ratio
• Lightweight
• Compressible and packable
• Wind resistant
• Insulated collar
• Mid height collar seals out drafts, layers easily under a shell
• Down Composite Mapping™ strategically places synthetic insulation in areas where moisture may buildup and down in areas for maximum warmth
• 850 fill European white goose down for exceptional warmth-to-weight ratio
• Recycled 15D Arato™ outer is light, durable, and coloured with dope dyed yarns
• Downproof 20D plant-based Arato™ liner is exceptionally lightweight and reduces petroleum use
• Stretchy cuffs
• Trim fit makes it an ideal layering piece
• Garment Centre Back Length: Size M is 29"/72cm - Varies by size
• FC0-DWR (Durable Water Repellent) finish repels moisture
• Adjustable hem draw cord seals out drafts
• Includes a stuff sack for easy packability — the stuff sack comes attached within the inner pocket, but can be easily removed by undoing the loop
• Articulated patterning for unrestricted mobility
• Two hand pockets with zippers
• Internal zippered security pocket
• Lining - bio-derived material
• RDS (Responsible Down Standard) - 100% of down is certified to the RDS by IDFL (No.TE-99950273)
• Feather - This product contains feather not exceeding that allowable by law
• PFAS (Per- and polyfluoroalkyl substances) Compliant
• Padding - bluepass Material
• Shell - FC0 DWR, recycled content
• TPU zipper-pulls reduce noise and are easy to grab
• Reverse coil centre-front zipper improves durability and creates a streamlined profile

Materials & care

• Synthetic Insulation: Coreloft™ 80 (80 g/m²) - 100% Polyester
• Down Insulation: 850 fill European white goose down - 100% White Goose Down (minimum 90% down)
• Lining: 10D x 20D Ripstop - 100% Nylon
• Body: Arato™ 15, recycled N6 microrip, jigger dyed - 100% Recycled Nylon
• Origin of fabric: JAPAN
• Origin of dyeing: JAPAN
• Origin of Manufacture: VIETNAM
• May release plastic microfibres into the environment when washing
• Machine wash gentle low
• Tumble dry gentle low
• Tumble dry low with tennis balls
• Do not bleach
• Wash dark colours separately
• Do not dry clean
• Do not iron
• Do not use fabric softener
• Double rinse
• Front load washer recommended
• Use mesh bag for top load washer

Sizing & fit

Fit: Fitted

Trimmer fit is patterned to stay close to the body through the chest, waist, hip, and thigh. Its low profile eliminates bulk, moves with the body, and fits comfortably over first layers or under outer layers.

Compatibility

The Cerium Jacket is designed as an alpine midlayer and versatile standalone. Its trim fit layers easily under a shell and over first layers.

What's included

• Cerium Jacket Men's
• Removable stuff sack (attached inside the internal zippered security pocket)