- a patent pending therapeutic seat, heating pad that allows you to take the far infrared therapy with you while driving or add the optional converter so you can use it at your desk. If you experience sciatica, back pain or discomfort from sitting for extended periods of time, this is the most valuable pain reliever that you will ever find. Not to mention it provides the same far infrared heat penetration as the Lux Spa. You're getting the same therapeutic benefits without thinking about it.