Cold days bring the best climbing conditions—and the Thorium Jacket lets you make the most of them. Designed for durability, this belay jacket features bold baffling stuffed with 750-fill down for reliable warmth, while the rugged mini-ripstop shell withstands sharp rock. Climbing-specific details like a two-way front zip for harness access and oversized internal dump pockets to keep shoes warm between burns make it an essential layer for the chilliest sessions.

What's been updated: The Thorium Jacket is refined for climbers, with increased down fill for added warmth, a boxier fit for better layering, and larger baffles that boost insulation and set it apart visually from past versions.

Technical Features:

• Moisture-resistant outer face fabric
• Breathable
• Lightweight
• Compressible and packable

Construction:

• 750 fill power European grey goose down provides lightweight, efficient warmth and is RDS (Responsible Down Standard) certified
• 30d Toray mini-ripstop nylon shell is durable, standing up to rock, abrasion, and repeated use
• Clean baffling and a modern silhouette that transitions easily from crags to everyday wear

Design & Fit:

• Regular fit provides freedom of movement with room for layers
• Garment Centre Back Length: Size M is 29"/72cm - Varies by size

Fabric Treatment: FC0 DWR (Durable Water Repellent) finish repels moisture and is free from intentionally added PFAS

Hem Configuration: Adjustable hem draw cord seals out drafts

Patterning:

• Articulated patterning for unrestricted mobility
• Gusseted underarms for mobility and comfort

Pocket Configuration:

• Chest pocket with zip
• Two internal dump pockets
• Fleece-lined hand pockets keep hands warm

Sustainability:

• Padding - bluepass Material, recycled content
• RDS (Responsible Down Standard) - 100% of Arc'teryx' 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
• Lining - FC0 DWR
• Shell - FC0 DWR

Zippers & Fly Configuration: Two-way front zipper

Materials:

• Down Insulation: 750 fill European grey goose down - 100% Grey Goose Down (minimum 90% down)
• Lining: 10D x 20D Ripstop - 100% Nylon
• Synthetic Insulation: Coreloft™ 140 (140 g/m²) - 100% Polyester
• Body: 30D Nylon Mini-rip with AC Coating, 53gsm - 100% Nylon
• Origin of fabric: JAPAN
• Origin of dyeing: JAPAN
• Origin of Manufacture: BANGLADESH
• May release plastic microfibres into the environment when washing

Care:

• Machine wash gentle low
• Tumble dry low with tennis balls
• Tumble dry normal low
• 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