A cold-weather classic, this vest is made of woven poly and has a quilted stitch patterna "filled with grey duck down for warmth. The roomy cut and full-zip closure make layering easy. Benefits:Nike Therma-FIT technology helps manage your bodya (TM)s natural heat to help keep you warm in cold-weather conditions.i>> [] Product Details:Body/Lining:100% polyester. Panels:100% nylon. Fill:85% grey duck down/15% feathers (minimum 85% down)/(APA version:85% grey duck down/15% feathers). Machine wash. Imported. Style: IM9166; Color: Black/Black/Black; Size: S; Gender: Male; Age Group: Adult