The principle of the NUGA BEST product is based on a ceramic called Tourmanium; Obtained from a mixture of germanium, elvan, volcanic rocks and tourmaline. Crushed, the mixture is brought to a temperature of 1300 ° C. in order to eliminate all the impurities transforming this powder into micro-particles, thus becoming miraculous therapeutic stones. Tourmanium is a patented material designed and manufactured exclusively for NUGA BEST products with nano technology. It is designed to give more FIR emission to the deep tissue reinforcement of the dilation effect of the blood vessels, when combined with heat and also exposes negative ions to your body.