Saves up to 95 percent of electricity. A revolutionary way to sleep: it's a NEW SLEEPING CONCEPT. Take a second to imagine to sleep on slightly heated surface in chilling winter. Very Useful for Arthritics/Old age pains. It comes with a heat setting controller . Take a second to imagine to sleep on slightly heated surface in chilling winter. At the same time, the heat therapy relaxes the tired back and legs muscles. It radiates heat from beneath inducing deep restful sleep even in the coldest of