This puffer contains 100% responsibly sourced goose down. Engineered to deliver warmth to -30°C / -22°F, The Super Puff2O? is constructed with sealed seams and bonded channels to keep you dry and insulated, even in serious precipitation. This fully waterproof version is made with Rainstop — a waterproof, windproof fabric from Japan. Go ahead, leave your umbrella at home.