The Men's Primo Puff Jacket is Patagonia's warmest snow jacket for skiing, snowboarding, and surviving winter's day-to-day. It has a stretchy Gore-Tex shell for rugged waterproofing and comfortable breathability. Plumafill insulation adds an abundance of warmth that feels like down, but it's synthetic to stay warm even if you happen to get wet. There are zippers under each arm to amplify airflow for sufficient ventilation. The powder skirt is removable to transition from ski resort to ski town with ease.