Patagonia's Ultralight Down Vest Purchased new and lightly worn No obvious stains, tears, defects Shell and lining: 0.85-oz 15-denier 100% nylon ripstop Pertex Quantum® Y yarn with a DWR (durable water repellent) finish. Insulation: 800-fill-power 100% Traceable Down (European goose down that can be traced back to birds that were never force-fed, never live-plucked). Fabric is bluesign® approved Weight: 5.1 oz