Men's Patagonia Nano Puff Hoody - Blue - Hoodies The Nano Puff Hoody is a super-warm, windproof and water-resistant jacket by Patagonia. It's extra-comfy, will keep you nice and toasty with its PrimaLoft insulation, and it has that really swanky brick quilting pattern. Windproof & water-resistant. 100% recycled polyester ripstop shell. Durable water repellent finish. Lightweight and easy to stuff into the internal zippered chest pocket. Highly compressible 60g PrimaLoft Gold Insulation. Two zippered handwarmer pockets. Dual adjust drawcord hem helps retain warmth. Fair Trade CertifiedTM sewn. Classic Navy.