Ultra Force Black Wool Navy Duffle Coat.Wool blend. With attached hood. Double zipper. Full (body, sleeves and hood) quilted nylon liner. Four large (2" long) toggle buttons on front (with leather patch on button and hook side). Two front slash pockets. One interior pocket (left chest). GI - Government Issued style. Army style. Military style. Military jackets are great for windy weather wear, cold weather wear, fashionable wear, school wear, rainy weather, and much more. A duffle coat, or duffel coat, is a coat made from duffle, a coarse, thick, woollen material. Duffle coats are a traditional British garment, dating from 1890.