Made to Move: Rocking motion engages leg, back, and core muscles while sitting or standing Flexible: A fully articulating pedestal means you can lean in any direction to keep your lower body engaged, with a tilt guard in place to prevent the seat from articulating forward more than 20 degrees Comfortable: The comfortable cushioned top measures 17' wide, taking up less space than an average office chair, with a low seatback profile to promote good posture Quality Materials: The durable polypropylene seat pan and wide cushioned seat can support up to 250 lb