QCA Spas TheraSauna TS5753 2-Person Plus Infrared Health Sauna, 57 by 52 by 78-Inch, Warm Mahogany TheraSauna is handcrafted in the USA of 99% non toxic and non allergenic Aspen hardwood Sauna comes with the patented MPS touch view 7 day programmable Control that allows two users The onboard computer memory will hold the settings in memory even if the sauna experiences a power failure MPS control can control the temperature and micron level of each heating unit, wave through the entire micron range from 0 to 14 microns of Infrared Your sauna is shipped to you knocked down in five cartons and assembles in 35 minutes with the easy to use furniture bolts