Seat cushion contours reduce pressure points to provide support exactly where needed. Large scale back supports a wide variety of users. ilira®-stretch knit fabric back cradles spine. Additional support bar on back frame increases overall strength. Controls on this chair are easy to reach and simple to understand, featuring only one lever and front-access tilt tension. Synchro-tilt mechanism reclines the back at a higher ratio than the seat for proper back alignment. Height- and -width adjustable arms.