A component combination of a lightweight shell and a hybrid insulator. We designed each piece separately first and then engineered them to work seamlessly together. A great value for a two-in-one system. The Trilogy Jacket has critical seams sealed with our exclusive HydroBlock® Pro 15,000mm waterproof/breathable technology while the component utilizes our premium hydrophobic 60 gram insulation. The shell also has an integrated CZV™ Control Zone Ventilation system. The hybrid insulator zips into shell while the jacket has a removable hood, interior electronics pocket with wire port, cell phone pocket, adjustable hem, and integrated Snap-Away™ powder skirt.