The Serta Electric Warming Mattress Pad offers all of the comfort features of the brand's best pads along with complete waterproof protection. The product has a patented, non-hazardous low-voltage technology for optimal and safe operation. With this worry-free, auto-off capability, you can sleep through the night feeling confident. This electric mattress pad has an automatic over-temperature regulation. The material is also treated with patented Scotchgard stain repellent. The ultra-thin wires are three times thinner than conventional warming product wires and, as a result, are virtually indiscernible to the touch. The white Serta waterproof mattress pad, also makes a wonderful gift.