The North Face Men's ThermoBall Hooded Insulated Jacket has the warmth of a 600 fill down jacket coupled with the wet weather performance of synthetic insulation. The innovative Primaloft Thermoball synthetic insulation looks and acts like round clusters that make up down insulation, retaining body heat so you stay warm in a lightweight and lofty jacket. It also compresses like down so you can stow it in its own pocket and pack it without sacrificing much space. But because it's synthetic insulation, you stay warm even when the jacket gets wet. The ThermoBall features a durable nylon shell that makes layering easy. Elasticized bindings around the cuffs and hood help retain your heat. A hem cinch cord tightens so warmth is retained while you ski, climb, hike, and play all over the mountains.