Patagonia's Nano Puff vest combines lightweight insulation with water-repellent performance. This black ripstop design features PrimaLoft® Gold Insulation Eco at 60 g/m², advanced P.U.R.E.™ technology, and a stand-up collar with front zip closure. Side zippered pockets and a drawstring hem offer practical storage and fit adjustment. Constructed from recycled polyester in a Fair Trade Certified facility, it transitions seamlessly from layering under a jacket to standalone outerwear.