The Men's Arc'teryx Thorium Hoody is a standalone puffy for cold-weather environments. The wind-resistant and moisture-resistant shell and a durable water repellent treatment are the first layer of defence against light wind and snow, and you'll rely on the 750 fill power down to trap heat against the body and keep you toasty. The downproof 20D Arato liner is smooth, gliding over layers like a chunky sweater, making it easy to slip on whenever the temperatures drop. Built for the office commute, ready for the everyday, and even capable of an afternoon winter hike.