There are many different types, construction materials and models. Bar stools are often made of wood or metal. There are bar stools with and without armrests, backs, and padding or upholstery on the seat surface. Bar stools can range from basic wooden designs to more complex ones with adjustable height. Extra tall and extra short are common features, as well as indoor bar stools and outdoor bar stools. Some bar stools have backs, while most do not. In commercial settings, swivel and floor mounted bar stools are common. Floor mounting renders the stool immovable, so it cannot be stolen or used as a weapon in a bar fight. Floor-mounted stools generally are mounted on a column, but stools with legs can also be secured to the floor using metal brackets.
The normal seat height for a bar stool is 30" (76 cm) with a 26" (66 cm) stool being used against kitchen counters. Extra tall 36" (91 cm) stools are increasingly used in contemporary styles with high pub tables to create a visual effect in modern interiors. Counter height bar stools have a seat height of 24" (61cm). By comparison a conventional dining chair seat height is 18" (46 cm). Some bar stools use polyurethane foam as padding for comfort. Bar stools can be made from rattan or bamboo and these stools can be used to create a tiki bar effect. The retro styling of the 1950 and 1960s is popular in some bars and restaurants, which use chrome and vinyl stools combined with matching benches or diner chairs. Stacking stools are often favored for their space-saving qualities. Some establishments use matching bar stools and chairs.
Aluminum is often used outdoors. Stacking aluminum stools and patio chairs are used by commercial premises. Indoors, wood and upholstery are popular in traditional settings. Bar stools are used in pool or billiard halls and the style of chair customized for such use is often called a "spectator chair". Bar stools are used in Ireland during weekends by followers of the English Premier League, a practice which led to the creation of the pejorative term "barstoolers" by supporters of the League of Ireland. Bar stools are a growth area in the consumer market and online purchasing is on the increase. They are becoming a staple of a modern kitchen, and expanding their uses with consumers using DIY to create their own furniture pieces with bar stools. Using bar stools as tables, desks, and even plant holders is growing in popularity. Bar stools can be made to order and customers can specify a wide range of fabrics and finishes as well as specifying other options such as height and custom foot rests. Both wooden and metal bar stools, including stainless and chrome styles and adjustable height features are popular.[citation n