100% nylon poplin front and back yoke with quilted 3M Thinsulate Insulation. 92% polyester, 8% spandex jersey sides, sleeves, and back body. Thermal reflective lining helps regulate body temperature by reflecting and retaining the natural warmth the body generates. Body mapping for less bulk when layered. Bungee cord and toggle waist pulls inside zipper hand-warmer pockets. Packable jacket folds into back zipper storage pocket. Contrasting panel and stitching on front. Rubber patch on front right hem and printed reflective graphics on back yoke.