Living room couches are the heart of every living room and combine various functions to a seat and berth with feel-good character. Together with matching armchairs, a couch represents the center of the room and occupies the most space. Freestanding home furniture is particularly popular. In smaller single households and in the initial supply of young people who move into their first home, a living room couch often has to serve as a bed at the same time. Sofas with bed function are also preferred in youth rooms. Here, a couch is used during the day as a relaxing furniture and at the weekend or unexpected visit as a place to sleep for guests. Couch furniture is available in different designs, sizes and materials. Cushions are placed on a shaping framework and upholstered in upholstery fabric, leather or imitation leather. The French form of the sofa is called Chaiselonge or Recamiere, and means an elegant divan bed for one person. The bigger the family and the living space are, the larger the size of the living area may be, so that all family members can find space on it.