Add a cushion to the top of any Alera® Pedestal or Low Credenza for instant seating. Soft resilient foam covered in soft long-lasting fabric. Rubber grip bottom surface holds cushion in place without slipping; but easily repositionable. Two inch think cushions offer just the right amount support. Pedestal File Seat Cushion. Back Support Type: Pedestal File Seat Cushion; Material(s): Fabric; Color(s): Smoke; Width: 14.88".