This is 11 balls jade heating foldable massager. Therasage Healing Pad features far infrared heat, negative ions and natural jade.When the jade is heated, it emits far-infrared heat that penetrates deep into your bodyas much as 3 inches below the skin.Deep penetrating, far-infrared heat has the following benefits: 1.Pain Relief Far infrared heat stimulates vasodilatation of peripheral blood vessels, bringing oxygen to joints and extremities, speeding the healing of sprains and strains, thus relieving pain and reducing the time it takes to recover from an injury. 2.Reduces Stress and Fatigue Far infrared heat reduces stress by loosening the muscles and relaxing the body.You'll feel rejuvenated and renewed, restored in both body and mind. 3.Improves Blood Circulation Far infrared heat is absorbed by cells, causing a physical phenomenon called "resonance" in which the cells are instantly invigorated, resulting in a better blood circulation.The increased blood circulation stimulates the tiny blood vessels in the skin to expand accommodating the increased blood flow. 4.Removes Harmful Toxins When toxins are present in our body, blood circulation is blocked and cellular energy is impaired.The body's immune system is inhibited, which makes it difficult for the body to fight disease.When far infrared heat is applied, the large water molecules in our bodies that contain toxic gases like sulphur dioxide, carbon dioxide, lead, mercury and chlorine vibrate and are broken down.The encapsulated toxic materials and gases are then released. 5.Improves the Immune System The deep heat raises your inner body temperature, inducing an artificial fever (mild hyperthermia).Fever is the body's natural mechanism to strengthen and accelerate the immune response, as seen in the case of infection.This enhanced immune system, combined with improved elimination of toxins and wastes, increases your overall health and resistance to disease. 6.Negative Ions Therasage Healing Pad features negative ions.Negative ions are odorless, tasteless, and invisible molecules are believed to produce biochemical reactions helping to relieve stress (calming), alleviate depression, boost our daytime energy and increase defense against infection.