A sofa is a piece of furniture typically designed for seating multiple people. It often consists of a cushioned seat, backrest, and armrests, offering comfort and support. Sofas come in various shapes, sizes, and styles, from sleek, modern designs to more traditional, cozy ones. They're often upholstered in fabrics like leather, linen, or velvet, and can feature a range of colors and patterns. Sofas can have additional features like recliners, built-in storage, or adjustable headrests. They're a central element in living rooms or other seating areas, offering a place for relaxation, conversation, or entertainment.