A convertible is a type of car that features a roof structure that can be either fully or partially retracted. This design allows drivers and passengers to enjoy an open-air experience when the roof is down, making it popular for leisurely drives and warm weather. Convertibles come in various styles, including two-door and four-door models, and can be powered by different types of engines. The mechanism for opening and closing the roof can vary, with some convertibles using a manual process while others have automatic systems. Many convertibles are designed with a focus on style and performance, appealing to those who appreciate both aesthetics and driving dynamics. Popular brands that produce convertibles include BMW, Ford, and Mazda.