The Men's Patagonia Nano Puff Jacket is an outdoor icon, prized by climbers and hikers for its ability to provide consistent warmth in unpredictable environments. Built with a 100% recycled polyester shell and high-performance synthetic insulation, the Nano Puff jacket is windproof, water-resistant, and stays warm even when wet. Its highly compressible design allows it to easily pack into its own internal pocket, making it the ultimate versatile layer for everything from alpine ascents to chilly morning commutes.