This insulator is a great companion to use as an warm layering piece under your shell jacket or to just add style as a stand alone jacket after a day of fun on the mountain. A thin migration free PrimaLoft insulation allow for a soft open mesh lining for better breathability and comfort, it packs small to fit in your back pack. Durable Water Repellency treatment (DWR). PrimaLoft Silver insulation 60g with Migration resistance in body and sleeves. Soft breathable mesh lining, back placket, stretch cuff, dual hand warming pockets with zippers and YKK quality zipper. Material: Polyester.