It is micro-computer controlled massage sofa,it could help to relieve pains from the back. With different massage modes it help to improve the blood circulation and lead a sound sleep. The different organs of body are all have a good massage ,such as buttocks,calves and feet. The air bags improve the massage function. When the backrest reclined,the footrest upward,it could become a good massage bed. Internal mechanical structure: Four humanized,quiet designed rollers at back driven up and down,make the kneading. finger-pressing,knocking and synchronizing functions both in individual and combined tybes Two air bags at seat,eight air bags at calf and eight at feet,you could enjoy a good massage at your lower body. Both backrest and footrest are auto reclied by control panel. The massage strength and width at back are both adjustable.