Warmth extended - down parka delivering full-coverage for cold, dry conditions. *The Thorium XLong Parka was previously the Thorium Parka. From the hood to the top of your boots - this is full-coverage warmth for winter's coldest days. The 750 fill-power goose down insulation is light, efficient, and responsibly sourced. Down Composite Mapping places Coreloft synthetic insulation in areas prone to moisture, including the hood, zipper guard, and under the arms, and the light, durable Arato 30 nylon shell has a PFAS-free treatment to repel water. Multiple pockets - inside and out - provide storage, and the two-way front zip and side-seam zippers at the hem free your stride.