Columbia Sportswear Men's Portland Explorer Interchange Jacket Shell: 100% Omni-Shield Ultra Touch Nylon. Lining: 100% nylon 210T taffeta. Liner: 100% polyester microfleece. Lining: 100% omni-heat reflective microtex light polyester. Insulation: 100% 60g Microtemp XF polyester Imported Interior Security Pocket Omni-Tech Waterproof/Breathable Fully Seam Sealed Omni-Heat Thermal Reflective and Insulated Liner. Zip-In 3-Point INTERCHANGE SYSTEM Zippered Chest Pocket