FIR (far infrared ray)-Negative Ion Temperature Sensing Neck Supports are compounded of Brazil gem tourmaline, ceramic powder with nanometer function and special heat inductive material. Under the stimulation of body temperature, through the action of transferring accelerant, heat inductive material reacts instantly and gives out quantity of heat. Under the amplitude of heat energy, far infrared ray and negative ions infiltrate into the deep of the skin, decompose peroxo lipids etc harmful substance excreted to the outside of the body by sweat and urine, dilate blood vessel, accelerate blood circulation, activate cells and adjust nerve.