Features：<br /><br />Industrial principle: spontaneous heat waist support with natural mineral tourmaline as the core、and nano biological function materials to form an organic whole of this product.Under the condition of changes in temperature、 pressure、 can release the far infrared、 negative ions continuously.And bring to the human body thermal stimulation effect of micro electric current.Can effectively improve circulation、 relieve muscle fatigue、 activate cells、 promote metabolism、 regulating channels、 functions of dehumidification、 analgesia to cold、 enhance airframe disease-resistant ability.Product safety and easy to use、 durable.