I ordered the Wärmeunterbett for my massage table and tried yesterday for the first time. It was very well received! However, I have been standing on stage 2 all the time and you must be at least. 30 min. Before the start of treatment to enable the ceiling for pre-heating. Level 1 is barely warm (hence 4 stars). But my fear that the heating wires lying down would be felt, has not been confirmed. For the price so thoroughly recommended.