Unlike most on the market this heated underblanket fits almost to the edge of the mattress eliminating cold spots and uncomfortable draughts with three heat settings and a convenient pre heat function the detachable controller allows it to be machine washed and tumble dried made from soft polyester it is fully reversible and with a patented beurer sleep safe system its perfectly suitable for all night usetie down fittings to secure to mattresspower light indicatordetachable controllerbs