This down jacket combines 860 fill power Polish goose down (93% down, 7% feather) with ultra-lightweight 10 denier recycled nylon for exceptional warmth-to-weight ratio. Three-dimensional armhole construction allows unrestricted movement, while the packable design makes it ideal for mountain huts, base camps, or everyday layering. Engineered for lightwieght warmth for those who refuse to compromise between insulation and mobility.