Tourmaline is a kind of mufti-element natural ore. It emits high-efficient infrared ray. In the process of outside temperature change, the heat of human body exchanges with outside by means of radialization and absorption of far infrared ray.
Tourmaline can be permanently released in line with the frequency of the human body far-infrared, negative ions, to promote human metabolism, detoxifies, the natural effect of physical therapy
It is an all season material, helping to keep cool in summer and warm in winter and primarily improves blood circulation , in this case to the head, which enhances brain cell functioning.
Health care Self-Heating Tourmaline Shoulder Protector/Double Shoulder