is a device suitable for dry heating-rooms with a temperature under 50°C like tepidariums, caldariums or infracabins. It is also suitable for wet-spa and wellness and people use it without any clothes, because it has healthy effects on skin. Oxygen concept produces and measures 90% of oxygen in a volume of up to 10 litres/min. The volume of oxygen in the room is increased from regular 21% to 30% in a condition of a room-size. It is also possible to measure a salt from Dead sea to the air by mini-elements of the size of 0,5-5 mikrons followed by creating a heavy salty fog. Alltogether with using a ionizator of air it cleans an air from dust and bacteries (a principe of a clean air after a storm). The device produces 5 mil. ionts/m3/sec. Similarly as a roman cabin, also this one is specific for its mozzaic or other ceramic poultice of many colours and shapes.