American Trench | the best of American Made - From source to style: made in USA trench coats, outerwear, socks, caps, apparel, and accessories.All of the products at American Trench are, unless otherwise noted, manufactured in America with raw materials being factory-assembled into finished goods. All end-state manufacturing takes place within the United States. Many of our products are made in America of American materials. This is considered to be an American-made piece, through and through.