Tourmaline round stone TENS heating mat helps respiratory, digestive and excretory systems medically. Carefit Cleanser TENS Mini Mattress is the wondrous Tourmaline heat mat, made out of tourmaline, germanium, elvan, and volcanic rocks. These minerals are pulverized into micro fine powder and heated up to 1,300 Degree. This helps in blocking of harmful electro magnatic waves & also emits 500-700 negative ions per qubic cm. Fir rays improves blood circulation & regulates body temperature. It not only helps in purifying blood but also helps in balancing blood ph level and helps in metabolism. Its special round shape helps in activating acupressure points all over your body.