The Sirocco Electric Under Blanket - King is ideal for cold winter nights. It features three heat settings ensuring you can find the right temperature to keep you warm. It has overheat protection allowing you to use the electric blanket all night without the worry of overheating. This under blanket is machine washable and features a detachable cord and single controller for when you want to wash your blanket. It also features a neon light to allow you to see when the under blanket is powered on.