Columbia Men's Whirlibird Interchange Jacket, Graphite Melange, 4X 100% Other Fibers Imported Omni-Heat thermal reflective liner Omni-Tech waterproof/breathable critically seam sealed Zip-in and 3-point Interchange System. Synthetic insulated liner. Removable adjustable hood Underarm venting 100% polyester microfiber, Omni-Heat Reflective Microtex Light 100% polyester, 80g Microtemp XF II 100% polyester, Omni-Tech Legacy Twill 100% nylon