The Ultralight Down Jacket, Patagonia's lightest-weight down jacket, uses 100% Traceable Down (800-fill-power goose down that can be traced back to birds that were never force-fed, never live-plucked) in a slim silhouette for thermal efficiency. Its superlight 100% nylon shell with a DWR (durable water repellent) finish blocks wind and light precip. When sun-kissed days turn cold, reach for a simple solution without excess: our Ultralight Down Jacket. It features 800-fill-power 100% Traceable Down and an ultralight nylon ripstop shell fabric that’s nearly half the weight and twice the strength of Patagonia's other down shell fabrics. The sewn-through construction, tight channel pattern, and just the right amount of down increase versatility for use in more moderate temperatures and diverse activities, while a DWR finish sheds snow. A slim silhouette maximizes thermal efficiency and suits its ideal uses: belay jacket over light layers at shaded crags, minimalist summer alpine bivies, and unmatched warmth layered under a shell. Pockets include two zippered handwarmers and one zippered chest. A drawcord hem keeps in the heat. Stuffsack included.