Lightweight, compressible, and super warm, the Patagonia Nano Puff® Jacket is built for spring ski tours, summer backpacking missions, chilly post-surf hangs, and everything in between. It's windproof and water-resistant, and its insulation maintains its warmth even when wet. Wear it as a mid-layer or wear it on its own -- either way, the Patagonia Nano Puff® Jacket is bound to be your new best friend.