NEVER use rubber mats, yoga mats, camp mats, solid objects, or a too thick layer (more than one inch) of towels or blankets to cover the HEATING mat.If the whole mat is covered with non-permeable material and continuously overheats, the mat will not be protected from overheating or burn.

NEVER leave your mat unattended while heating up.

The most important thing to note is that when you cover the surface of the mat, you must always cover the mat in its entirety. Never cover it partially or you could cause the heat sensors to malfunction. This error can create burns on the mat and could potentially damage it.