Relax Far Infrared Ray Sauna If you are considering getting another sauna for less money, I can assure you that their technology is primitive compared to the technology of the Infrared Relax Sauna. A paneled sauna using a piece of cloth, and a hotplate is probably only about 25% FIR Light versus the 100% FIR light you get with the Relax Sauna. And because it does not have intensity and purity, as does the Infrared Relax Sauna, it generally will not be as effective in terms of aiding healing, and certainly will not feel as incredible as the Infrared Relax Sauna does. Dozens of individuals who own expensive wooden saunas have chosen to purchase the Infrared Relax Sauna seen here – specifically noting that the wooden saunas are very slow to heat up and as a result don’t get much use. Similarly, scores of those who own other brands of portable saunas have purchased the Infrared Relax Sauna here, sighting that not only do their existing models take too long to heat up but also that they don’t get a good sweat, don’t feel as good as they do with the Relax Sauna, and see little improvement in their ailments with these other brands.