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The Arc'teryx Thorium is a women's down jacket built for cold-weather performance on the mountain. With a regular fit that layers easily, it's designed for skiers and riders who want serious warmth without bulk — whether you're lapping the chairlift all day or exploring in the backcountry.
At its core is 750-fill-power responsibly sourced grey goose down, distributed using Down Composite Mapping™, which places Coreloft™ synthetic insulation in moisture-prone zones and down everywhere else for consistent warmth. The lightweight Arato™ 30 nylon shell is highly abrasion-resistant, and an FC0-DWR treatment repels surface moisture without PFAS chemistry. Down Contour Construction™ lets the insulation conform to your body shape for better thermal efficiency, while the bio-derived liner reduces petroleum use. A helmet-compatible StormHood™ with a single-pull adjuster, stretchy cuffs, dual hem adjusters, and a packable stuff sack round out a feature set that earns daily use.
The Thorium is ideal for women who prioritize warmth and packability without sacrificing a clean, versatile silhouette. If you run cold on the lifts or want one jacket that transitions from resort mornings to après, this is it. The articulated patterning means you won't feel restricted whether you're carving groomers or hiking a skin track.
| Waterproofing | FC0-DWR (Durable Water Repellent) finish repels moisture |
| Insulation | 750 fill down for premium warmth |
| Fit | Regular |
| Features | Moisture-resistant outer face fabric |
| Breathable | |
| Lightweight | |
| Compressible and packable | |
| Wind resistant | |
| Down Composite Mapping™ strategically places synthetic insulation in areas where moisture may buildup and down in areas for maximum warmth | |
| 750 fill down for premium warmth | |
| Down Contour Construction™ allows the down to form to the body for more efficient thermal performance | |
| Downproof 20D plant-based Arato™ liner is exceptionally lightweight and reduces petroleum use | |
| Regular fit provides freedom of movement with room for layers | |
| Shorter length, but still offers coverage and warmth | |
| Garment Centre Back Length: Size S is 23"/58.5cm - Varies by size | |
| Dual lower hem adjusters | |
| Includes stuff sack for compact transport | |
| Two hand pockets with zippers | |
| Internal dump pocket | |
| Full front zip | |
| High collar adds warmth | |
| Stretchy cuffs | |
| Helmet compatible | |
| Single pull adjuster does not restrict vision | |
| Adjustable, low profile, insulated StormHood™ | |
| Articulated patterning for unrestricted mobility | |
| 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 |
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