Designed for cold hikes, mountain stops and everyday winter wear, the Thorium prioritises durable down warmth over ultralight minimalism. Its 750-fill goose down traps heat efficiently, while synthetic insulation is mapped to areas where moisture is more likely.

Key Features & Technical Specifications

• Down: 750-fill-power responsibly sourced European grey goose down
• Moisture zones: Down Composite Mapping™ uses Coreloft™ synthetic insulation where dampness is more likely
• Shell: abrasion-resistant 30-denier nylon mini-ripstop
• Weather: DWR-treated face fabric sheds light moisture; not a waterproof shell
• Construction: insulated baffled body, articulated fit and zippered hand pockets
• Hood: insulated adjustable StormHood™
• Best use: belays, winter hikes, cold-weather stops and camp
• Down insulation for dependable cold-weather warmth
• Layer under a waterproof shell in wet weather