A trench coat or trenchcoat is a coat variety made of waterproof heavy-duty cotton gabardine drill, leather, or poplin. It generally has a removable insulated lining, raglan sleeves, and the classic versions come in various lengths ranging from just above the ankles to above the knee. It was originally an item of clothing for Army officers and shows this influence in its styling.
Traditionally this garment is double-breasted with 10 front buttons, and has wide lapels, a storm flap, and pockets that button-close. The coat is belted at the waist with a self-belt, additionally having straps around the wrists that also buckle. The coat often has shoulder straps that button-close; those were a functional feature in a military context. The traditional color of a trench coat was khaki, although newer versions come in many colors.