KnowraSofa bedSofa bedA sofa that converts into a bed, usually by unfolding or extending a sleeping surface from its frame.BriefConnectPull-out sofa bed: A sofa bed whose mattress unfolds from a frame stored beneath the seat cushions. Its concealed mattress and folding support frame are a common conversion design.Guest room: A room in a home intended to accommodate visitors overnight. A sofa bed can provide sleeping space when a dedicated guest bed is impractical.Daybed: A bed designed for use as a sofa-like seat during the day. It resembles a sofa bed in serving two roles, but usually does not transform.Ergonomics: The study and design of products and environments to fit human capabilities and needs. Seat height, support, and opening effort shape comfort and ease of use.Click-clack sofa bed: A sofa bed that reclines into a sleeping surface by moving its backrest through hinged positions. Its backrest folds flat without a separate mattress hidden beneath the seat.Studio apartment: A dwelling in which living, sleeping, and cooking areas share one main room. One convertible piece can serve as both everyday seating and a bed.Sleeper chair: An upholstered chair that unfolds or extends into a single sleeping surface. It offers the same conversion in a smaller seat-sized form.Interior design: The planning of interior spaces, including their layout, furnishings, and finishes. A sofa bed must function as seating while fitting the room's layout and style.Futon: A mattress or upholstered cushion that folds between sofa and bed configurations. It converts by folding the sleeping surface itself, rather than deploying a separate mattress.Space-saving furniture: Furniture designed to provide useful functions while occupying limited floor space. Combining a sofa and bed reduces the need to dedicate space to each separately.Show all 21Linked from 2 pagesCouchBroader topic: It combines everyday seating with a place to sleep.FutonCompared with: It also converts between seating and sleeping, but typically conceals a separate bed mechanism.