Harnessing the power of premium 850-fill goose down, the Cerium Hoodie offers serious warmth in an exceptionally lightweight and compressible package. Mapped insulation uses warm-when-wet synthetic insulation in key moisture-prone areas, with light, compressible, and wonderfully warm down everywhere else. In fact, this jacket is so compressible that it comes with its own stuff sack. So throw it in your pack to use as a midlayer on alpine missions, or just keep it stashed away for a chilly day around town.