Convertible beds are beds designed to transform to a seating area, or to otherwise move or fold in some way. They are designed to be useable for other purposes or at least to be out of the way when not in use. They may collapse or slide out of the way, often by moving pillows or portions of a divided mattress. They may be designed to lift up on one end (like the hood of a car) to access storage areas underneath. Convertible beds are similar to moveable beds, with the difference that convertible beds change shape, while moveable beds just lift to the ceiling or fold against the wall.
If you have multiple cushions comprising your mattress and you find yourself slipping into the cracks between them, consider putting a mattress bridge between the sections. It may also be sufficient just to put a fitted sheet or fitted mattress pad over all sections.
Rock N Roll beds (also called rock and roll beds) are a type of convertible bed that can be used as an automotive seat and laid flat to form a bed. They are typically 2- or 3-seat benches and are usually upholstered as automotive seats.
