Loose-Fill Insulation

A dependable synthetic midlayer that balances weight, packability and comfort. Patagonia says:  We built the Nano Puff® Jacket for climbers who needed a weather-resistant, lightweight and packable synthetic insulation layer that could stay w…

Warmth, packability, and versatility for year-round mountain adventures. Rab says:  Layer in winter or use as an outer in the warmer months, this versatile synthetic insulated jacket is perfect for year-round alpine use. With a fresh design that…