This cushion massaged completely from the bottom through to the top. I am 1,74 m tall and the device would massage even further above (about 15 cm more). It is easy to adjust, to be massaged up to what level. The heat function can be switched on or off manually. The rollers move either parallel to the spine up and down. However, it can also be chosen the "Shiatsu" function. Here the rollers rotate and drive back up and down. It can also be a point massage can be selected. Here, the reels spin at an altitude that can be manually selected and adjusted. Zusätlich to turn on the seat vibration. The massage is very intense, but may be weakened because a cushion is included in the set. One can also exert themselves more or less pressure on the mat. All in all a very good investment.