One minute the wind howls and your breath freezes, and a second later the clouds part and the sun shines. A shoulder-season staple, our Ultralight Down Jacket features 800-fill-power Traceable Down (800-fill-power goose down from geese traced from parent farm to apparel factory to help ensure the birds that supply it are not force-fed or live-plucked, as certified by NSF, an independent third party) and an ultralight nylon ripstop shell fabric that’s nearly half the weight and twice the strength of our 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 (durable water repellent) 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. The jacket self-stuffs into the left handwarmer to become a travel pillow, and into the chest pocket for storage, with carabiner clip-in loop. A drawcord hem keeps in the heat.