Synthetic Vests

Warm, windproof, water-resistant—the Nano Puff Vest uses warm, incredibly lightweight and highly compressible 60-g PrimaLoft Gold Insulation Eco with 55% postconsumer recycled content, wrapped in a 100% recycled polyester shell and liner. ...

We're working out what we think - we'll add our view here!  Patagonia says:  We built the Nano Puff® Vest for climbers who needed a weather-resistant, lightweight and packable synthetic insulation layer that could stay warm even when we…