The luxurious design of the TAO Mat King Soft incorporates four natural gemstones to generate a harmonious release of far infrared rays and negative ions. Never before has a gemstone mat used tourmaline, amethyst, obsidian, and jade at the same time. This cutting-edge innovation is combined with many multifunctional layers that improve the effectiveness of the mat and shield against EMFs. The TAO Mat King Soft is also one of the first TAO models without a PEMF system and with fewer layers, comes increased comfort and flexibility. It is sized to fit a king-sized mattress so it is recommended that you sleep on this mat overnight. Since it is large enough to accommodate two people at the same time, the TAO Mat King Soft has independent heat controls on the left and right side so that each user can customize the session to their liking. Anyone searching for the ultimate sleeping experience should look no further than the TAO Mat King Soft, and treat their body to therapy sessions fit for a king.