Mt Whitney Zone Forums General Discussion Gear for first attempt in late July?

Not sure how much the DWR coating does, but down does not do well when wet (loses its insulating ability). I have a Marmot down jacket that I love. It does block the wind and packs very small. If I anticipate rain then I also carry a shell which provides a water proof barrier, as well as additional warmth if needed. It Also packs very small and only weights 7 oz.