What Our Gearhead(R) Experts Are Saying: "The Nano Puff is my favorite do-everything jacket. It packs down tiny, keeps me warm even when it's damp out, and I love knowing it's made from 100% recycled materials. I've used it for everything-camping, commuting, layering under shells-it's a true all-season essential." We reach for the Nano Puff Jacket when we want dependable warmth that won't weigh us down. Patagonia engineered this layer with 60g PrimaLoft(R) Gold Insulation Eco-made from 100% postconsumer recycled polyester using reduced-emission P. U. R. E.(TM) technology-delivering impressive heat retention even when wet. The 100% recycled polyester ripstop shell and lining are treated with a PFAS-free DWR finish to shed light rain and block wind without harming the environment. A brick quilting pattern keeps the insulation in place and adds long-term durability. We especially love the packability-it stuffs neatly into its own chest pocket so it's always ready to travel. With thoughtful features like a drop-tail hem, internal storm flap, and secure zip pockets, the Nano Puff keeps us warm and protected from trail to tarmac.