Feather Gray Nano Puff Jacket by Patagonia. If you’ve owned one of these, you know how amazing they are. Super lightweight, WARM, packable. An essential layer for winter fun. On its own, it’s lighter than a sweater and as warm as a massive down puffer coat. A must-have for winter walkers, hikers, bikers… or anyone who wants to be incredibly toasty without adding 3 feet to your silhouette. Just go look at the reviews. There’s a reason these jackets go for $229 new. Great shape! No signs of wear.