A Convertible also called as Cabriolet, is an automobile body style that can convert between an open-air mode and an enclosed one, varying in degree and means by model. Historically, a retractable roof consisted of an articulated frame covered with a folding textile-based fabric similar to that on an open carriage evolved into the most common form. A lesser seen detachable hardtop provided a more weatherproof and secure alternative. As technology improved a retractable hardtop which removes and stows its own rigid roof in its trunk appeared, increasingly becoming the most popular form.
A semi-convertible also known as a cabrio coach has a retractable or removable top which retains fully framed windows on its doors and side glass. The majority of convertible cars are two door models, with very few four-door models.