Built for cold days on exposed mountainsides, the Elixir Hybrid Ventrix Gilet will keep you warm without adding unnecessary weight or bulk to your layering system. Adaptable Ventrix insulation harnesses perforations in key zones that open with movement, allowing excess heat and perspiration to escape, while remaining closed in times of rest to retain heat. Coupled with our cutting-edge wind-resistant WindWall fabric, you'll be protected from the elements right to the end of the trail.