Ordered this top-rated mattress pad as a gift but it didn't arrive in time so I had to buy another. It has all the features you could want, including a digital controller with 10 heat settings, 10-hour auto shutoff and ultra-thin heating wires. Padded for comfort, covered in 50% cotton-50% polyester fabric and certified by ETL/Intertek, a third-party organization that tests electrical items for safety. Machine washable and dryer-safe (after removing its controller and cord) and saves energy because you can turn down your thermostat and still be warm and cozy. Stretchy attached skirt offers a snug fit. For twin mattresses (39" x 75") up to 22" deep. Brand new in box.