46x46 CM Photon and Tourmaline Far Infrared Anion Therapy Heating Pad 1)Far Infrared Therapy. (6 modern photon LEDs) 3)Heating Therapy. Temperature is adjustable from 30-70 degree C. 4)Tourmanium Ceramic Stones 5)Special Silicon: Special silicon is used to attach Tourmanium with the top cover to prevent harmful materials even in high temperature. 6)No electromagnetic waves: Special fiber free of corrosion and damage is used to block electromagnetic waves. 7)Aluminum foil blocks water vein 8)Silicon wire: No disconnection problem and no danger of fire.