Personified meachanic massage hands in the back ties with the vibration rolls. Various massage fuctions can be synchronous, meanwhile opening the kneading rolls. 2 long-shaped airbags, 1 quadrate airbag and 1 vibration roll in the seat cushion, 8 airbags in the calf support. While the calf support rising to the toppest, it can stretch out 8cm automaticlly. That can satisfy the length while lying.