The Serta waterproof heated mattress pad provides added comfort and protection to the top of your mattress. This heated mattress pad uses a soft cotton/polyester top fabric for comfort, with a waterproof backing layer underneath. This construction allows the pad to feel breathable and absorbent on the surface while still protecting the mattress. A controller with 10 heat settings provides the perfect amount of warmth, while the 1-12 hour automatic shut-off timer helps ensure your safety. Machine washable for easy care, this waterproof heated mattress pad brings cozy comfort to your bed. Twin and full size have one controller, queen and king size have 2 controllers. The product includes manufacturer’s 5-year warranty. •2 separate temperature zones for Queen, King and Cal King sizes (2 controllers) •Overheating protection •ETL certified •Power cord 6 ft long, controller cord 8.5 ft long