Nothing beats the coziness of a down vest and the Arc'teryx Thorium Vest will be the one you grab whenever it's time to brave the cold. 750 fill-power Responsible Down Standard certified grey goose down offers exceptional warmth and mapped Coreloft™ synthetic insulation strategically reinforces moisture-prone areas. The light and sturdy Arato™ 30 nylon shell boasts a DWR treatment to repel water and keep the down dry, making the Thorium your ultimate cold-weather companion.