Can I cover the mat? Will the FIR rays and ions go through?

Yes, you can cover the mat. FIR rays, ions, and the N.P. charge can penetrate through covers, pads, towels, or sheets.

You can start with as many layers as needed to feel comfortable. The set usually includes two covers (a thick one and a thin one), and you may add additional layers if the mat still feels too firm.

Some heat may dissipate if the layers are too thick, but you can compensate for this by slightly increasing the heating level.

As your body becomes more accustomed to the mat, you may remove the extra layers one by one.

It is very important to cover the mat completely while preheating it.

If the mat is only partially covered, the temperature sensors located in different layers across the mat may report inconsistent measurements to the controller.

As a result, the controller may lose calibration and begin to operate incorrectly or malfunction.

For this reason, always make sure the mat is fully covered while it is preheating to the selected temperature.