Columbia Sportswear Men's Heater-Change Jacket Shell: 100% polyester Omni-Tech plain weave. 100% nylon 2-layer tonal weave. Lining: 100% polyester Omni-Heat Reflective Microtex Light Imported Removable Hood Omni-Heat Thermal Reflective Omni-Tech Waterproof/Breathable Fully Seam Sealed INTERCHANGE Compatible Underarm Venting