Cover your bed with the Beautyrest Heated Mattress Pad using Secure Comfort technology. Designed to virtually eliminate Electromagnetic Field emissions, this heated mattress pad features a 10-hour auto-shut off timer and a 5 setting temperature control to ensure your safety. The soft flexible wires and quilted top provide exceptional comfort, while the fitted skirt perfectly fits up to a 18" mattress. Made from a cotton polyester blend, our heated mattress pad is machine washable for easy care. Twin, Twin XL, and Full sizes have one controller, while Queen, King, and Cal King sizes have two controllers.