This is a  Shakti Mat can also be called an Acupressure Massage Mat.

It improves the circulation of blood, reduce blood pressure, stimulate your immune system,  stimulate your body to fight obesity naturally. This is totally natural. No side effect has been found after hundreds of studies. The logic behind it is to stimulate (wake up) your body's healing mechanism and let it heal itself before things get worse, without the help of medicine.

This mat uses massage nails to stimulate different meridian point all over your body and foot reflexology uses acu-pressure to stimulate the organ reflection points (pressure points) on your feet.