Theory:

Far Infrared rays has the ability to penetrate, refract, radiate and reflect. The human body can absorb FIR because of its deep penetrating ability. When FIR penetrates through skin to the subcutaneous tissues, it transforms from light energy into heat energy. The thermal effect within the deep layers of the tissues causes blood vessels and capillaries to dilate, promoting a better blood circulation, and the heat so produced helps to get rid of body toxins and metabolic wastes through sweating.

By absorbing the energy eradiated by Far Infrared Ray, it will promote the blood circulation in your body and therefore accelerate the metabolism in your body, discharge toxic element, alleviate pain, eliminating inflammation, relieve pressure and promote deep sleeping. Specially good for office clerk, elder person or weak person etc.