Car seat cushion: 1. Micro-computerized controlling systerm with several vibrators. 2. DIfferent massage modes are available: Kneading, tapping, shiatsu, vibration. 3. To relieve lumbar discomfort and backaches. 4. It has assistant cure effect upon chronic strain of lumbar muscles. 5. To relieve and relax fatigued back and lumbar muscles after long time of office work. 6. Convenient to use at home and office with a reliable secure DC 12V adpater.