The Leg Massager from Oliver James uses air compression to target your feet and calves for a relaxing massage. With 4 modes, 4 intensities and a warming heat function you can find the perfect settings for a massage to improve circulation, get relief from leg cramps, and relax after a long day. Please note this ONLY uses air pressure and does not use massage nodes to provide the massage. Please also note the air compression on the highest setting is very powerful. Most people only need to use the first 2 settings.