Temperature Controller: single temperature controller. Cushion size: 45m*45m FIR, Negative Ion, Magnetic Jade Cushion Jade cushion is in form of an electric heating mat that emitting Far-Infrared Ray , Negative Ion, Magnetic Super Long Wave. Additional features such as Rhythm Massager and Vibrator devise are add to some of our jade cushion. This product helps modern people who don't have enough time to pay attention to their health.So it is adequate for modern living space. Blood circulation improvement is effective through far-infrared ray hyper-thermia treatment. Automatic electric wave diminishing devise was utilized and the emission of farinfrared ray reaches 93.5 %, plus materials in which negative ion is simultaneously emitted were all combined in the cushion after conducting a through research.