Columbia Women's Mile Summit Jacket Shell: 100% Polyester; Lining: 100% Polyester Imported Polyester lining Machine Wash Zip-in interchange system Waterproof fabric Fleece liner Shell: 100 percent polyester reflex stretch twill. Lining: 100 percent Omni-heat reflective microtex light polyester. Insulation: 100 percent 80g Omni-heat thermal insulation Attached, adjustable storm hood Interior security pocket