An office chair is a comfortable and ergonomic seating option designed specifically for use in offices or workspaces. It typically features a padded seat and backrest, adjustable height and tilt mechanisms, and armrests for added support. The chair often has wheels or casters for easy mobility and may also include additional features like lumbar support or headrests. Office chairs are essential for providing a comfortable and supportive seating solution to promote productivity and reduce discomfort during long hours of work.