The Nano-Air® Light Jacket was made to be worn for the entirety of your aerobic, start-stop mountain activities, so you’re never slowed down by having to change layers. Stretchy and breathable FullRange® insulation dumps excess heat when you’re working hard and keeps you warm when you’re not. The Women's Nano-Air® Light Jacket is fully backed by our Ironclad Guarantee and you can find it on Patagonia.com. | Patagonia Women's Nano-Air® Insulated Light Jacket in Blue Sage, Large - Recycled Polyester