... 2.factory with high quality and low Tourmaline Neck Pillow, designed to emit far infrared rays and anions ... of tourmaline, germanium, elvan, and volcanic rocks. This pillow adopts 49pcs of tourmaline stones Tourmaline emits about 2.5 ... for those; Nervous system : Having headache, dizziness, insomnia, poor memory, stroke Circulation system : coronary heart disease, hypertension, angitis, arterosclerosis ...