Columbia Sportswear Women's Plus Mighty Lite IIi Jacket Shell: 100% Polyester Windowpane Triple Ripstop. Lining: 100% Omni-Heat Reflective Microtex Light Polyester. Insulation: 100% 80G Omni-Heat Thermal Insulation Imported Interior Security Pocket Omni-Heat Thermal Reflective Insulated, 80gsm Water Resistant Fabric Zip-Closed Pockets