When there's space for a generously proportioned sofa and the desire for resort-like hospitality, our Z4 Knife Arm King Sleeper Sofa delivers all of that in one easy maneuver. The King Sleeper has a 3/3 cushion configuration, and you can select your preferred Bassett comfort seat cushion. The back cushions are loose so you can rotate them or remove them when in sleep sofa mode. Our Z4 Sleepers are engineered around a European-style mechanism that is much lighter and incredibly easy to operate. When the sofa bed is opened, the sleep surface dimensions are those of a King mattress. Your knife arm sofa style can be further customized by your choice of designer fabric, with more choices of fabric and leather upholstery available in store.