A trench coat (or trenchcoat) is a type of outdoor clothing. Trenchcoats are long coats made from stiff material, like heavy-duty cotton. They were invented for soldiers to wear in The First World War to keep them warm. Most trench coats also protect the wearer against rain. As a fashion[change | change source]In the 1950s, trench coats became a popular fashion item. In the 1980s and 1990s, trench coats were worn by punk rock musicians and gothic rock musicians. There have been many remodels of it. In 2018, it is a trend.