Epic leads, spindrift belays, start, stop, simul to the summit, descendG? all in one jacket. Patagonia's Nano-Air Hoody sets a new standard for technical insulation, merging the comfort and breathability of open fleece with the protection and warmth of a puffy. Its supremely stretchy and breathable fabric package combines a plain-weave liner, warm-when-wet FullRange insulation and a lightweight yet durable, weather-shedding 100% nylon ripstop shell with a DWR (durable water repellent) finish.