Upholstery: PU, Cow leather, leather/PU, cotton cloth. Vibration function: 8 moters vibration massage system, 8functions selected. 3 speed intensity (weak, normal and strong) Remote control is friendly to user 10,20,30, minutes Timer Heat function: One Heater is added on the back to warm the user抯 waist. Lifting function: The chair is designed specially for the old people and the handicapped people. It can lift the user slowly to make him or her stand up easily. There are three position for user: recline position, sitting position and lifting position. You can choose the chair without a massage system to be a normal leisure chair.