Arc'teryxThorium Jacket

Rugged down insulation for cold-weather rock climbing and all-mountain use. 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. Full Product Features 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 our 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