A unisex public toilet, also known as a unisex toilet, unisex bathroom, family toilet, or gender-neutral bathroom, is a public restroom or toilet that is available for use by either the male or female gender, including family restrooms for family or elderly use. Unisex toilets can be used by all persons, regardless of gender identity. Unisex toilets may be built by developers to save costs; instead of building two separate facilities, they only need to build one or one type, which may save costs as well as reduce space. Where it is impractical to have separate facilities, such as in airliners, trains, or buses, unisex toilets are used.