Stay on task with the Carter stool. Keep it simple with its armless design or add on optional arms. Added stool kit allows for the perfect chair to use as a drafting stool, at a stand up desk or at cafe height tables. A comfortable mesh back allows for air circulation and is contoured for lumbar support. The contoured and padded seat is upholstered with a durable and breathable black mesh. Its compact, armless design allows the seat to slide completely underneath desks or tables when not in use. Add optional arms anytime for a fresh look. Chair functions include pneumatic seat height and swivel. Added stool kit allows for the perfect chair to use as a drafting stool, at a stand up desk or at cafe height tables. Explanation of functions- 360 degree swivel: Chair is able to rotate 360 degrees in either direction. All Regency chairs are backed by a 5-year limited manufacturer's warranty on chair bases and frames and a 2-year limited manufacturer's warranty on chair mechanisms and upholstery.