... balls moving up & down backrest 4)seat vibration THERMAL CAR MASSAGE CUSHION,BACK MASSAGE CUSHION,SHIATSU MASSAGER CUSHION,CUSHION MASSAGER ... . 4. Backrest 3 massage programs:full back,upper back,lower back. 5. Vibration massage on seat cushion. 6. High quality PU & ... in massage device,staffing around 300 employees,with capacity of annual turnover USD8 million,with CE,RoHS,ISO9001 certificates ...