Bar stools ;are a type of tall stool, often with a footrest to support the feet. The height and narrowness of bar stools make them suitable for use at bars and high tables in pubs or bars.
Before Prohibition in the United States, bar stools were not used in drinking establishments, but in food establishments. Bars without stools were the norm, and that was considered "an American peculiarity".
There are many different types, of construction materials, and models. Bar stools are often made of wood or metal.
http://www.duomeifurniture.com/bar-stool/