Adjustable Flexible FootRest adjusts automatically with its rocking motion. Increases circulation,reduces lower back pain and helps achieve natural posture. Footrests are an essential part in creating an ergonomic workstation. Footrests maintain a 90˚ angle and ensure your feet are flatly on the floor and not dangling. This allows for unrestricted bllod flow throughout your lower extremities. 6" sturdy steel frame. Durable plastic textured platform.