Warm, versatile and rugged, our duck active jac is made of heavyweight 12-ounce, firm-hand, 100% ring-spun cotton duck The body and hood are lined with quilted flannel, and the sleeves are lined with quilted nylon. For added storage, there are also two inside pockets.*12-ounce, heavyweight, firm-hand, 100% ring-spun cotton duck *Quilted-flannel lining in body, quilted-nylon lining in sleeves *Attached hood.