A new era of highly technical, supremely stylish jackets starts today with the Patagonia Women's Nano-Air Insulated Jacket. This trim-fitting jacket is filled with Patagonia's revolutionary FullRange insulation. FullRange insulation blends the warmth and breathability of other synthetic insulation with the stretch and flexibility of fleece. Nylon plain weave on the inside glides over your baselayer effortlessly. A DWR treatment helps excess water bead up and roll away, rather than sit on the jacket surface and slowly sink into the insulation.