Exceptionally light and warm, the Cerium Vest is ideal insulation for backcountry minimalists. Easily stashed in your pack, it’s instantly available for core warmth as a midlayer in cold, dry conditions or a standalone during rest breaks or at camp. Responsibly-sourced 850 fill down – with Coreloft synthetic utilized in areas prone to moisture – provides premium insulation. A bio-derived liner helps reduce petroleum use, and the recycled 15D Arato nylon outer is light and durable. A stuff sack’s included for compact transport.