Office chairs are designed to provide comfort and support while sitting at a desk or workstation. They typically have a seat, backrest, and wheels for mobility. Some office chairs also have adjustable features such as height and tilt, and may include armrests and lumbar support. The materials used to make office chairs can vary, with options such as mesh, leather, and fabric. Office chairs are important for maintaining good posture and reducing the risk of back and neck pain while working.