Loading... Please wait...Warm, versatile and rugged, our duck active jac is made of Heavyweight 12-ounce, firm-hand, 100% ring-spun Cotton duck The body is lined with Quilted flannel, and the Sleeves are lined with Quilted Nylon, as is the attached hood and the Two hand-warmer Pockets. For added storage, there are also Two inSide Pockets.