Seating includes chairback seats and bench seating, all with backrests. In some sectors, the seats and backrests are upholstered with or without arms. Molded wood is used for flat furniture components such as seats, backrests and seat shells. Lower back backrests support only the lumbar region. The doors were very wide and the front seats could slide and had hinged backrests. Benches range from simple planks to elaborate ones with backrests. These properties are used in two-dimensional moldings such as seats, backrests and shells. The rear seat backrests can be folded remotely via a release in the boot. The seats from the highest row had backrests. Some saddle chairs have backrests, but most do not. In both classes, some seats featured video monitors in the backrests of the seats. Shoulder height backrests support the entire back and shoulders. Orthopedic backrests provide support for the back.