The FIVE S FS8816 is designed with a special car seat cover that can be removed to use the massager at home. It has 4 adjustable elastic straps which provide support and comfort while you are driving or relaxing in your favorite chair. The vibration motors are located on the upper back, lower back, and thighs to massage those areas. The FIVE S FS8816 also has 3 built-in massage programs: relax, relief and strengthen as well as an independent heat function for the upper back and shoulders. The intensity level of the massage can be adjusted.