The Columbia Women's Whirlibird IV Interchange Jacket is a versatile 3-in-1 system that comfortably transitions through the seasons. The exterior Features a waterproof, wind-resistant shell for those stormy, precipitous occasions. The inner jacket Features lightweight Insulation and an Omni-Heat reflective liner that retains body heat for longer without any added bulk. With its smooth, water-resistant face fabric, the inner jacket is great for cool weather hiking and even those bluebird ski days. Zip the two layers together for full winter protection. Features of the Columbia Women's Whirlibird IV Interchange Jacket Omni-Tech waterproof/breathable critically seam sealed Omni-heat thermal reflective Thermarator Insulation Zip-in and 3-point interchange system Attached, adjustable hood Drawcord adjustable hood Underarm venting Zippered chest pocket Ski pass pocket Interior security pocket Goggle pocket Zippered hand pockets Adjustable cuffs Drawcord adjustable hem Fabric Details Shell: Legacy dobby 72% Nylon, 28% Polyester Lining: 100% Polyester