Columbia Sportswear Men's Big Alpine Action Jacket, Hyper Blue, 4X Shell: 100% Polyester Matte Melange. Lining: 100% Omni-Heat Reflective Microtex Light Polyester. Insulation: 100% 100G Microtemp Xf Ii Polyester Imported Removable Powder Skirt Omni-Heat Thermal Reflective and Insulated Omni-Tech Waterproof/Breathable Fully Seam Sealed Removable, Adjustable Storm Hood Interior Security Pocket