BEAT THE CHILL: UK households are facing a challenging time this Winter, but before you turn up the heating, our controllable electric underblanket could be the extra layer that makes the difference. THE PERFECT FIT: Tie attach to your mattress for a non-slip fit and undisturbed sleep. 4 TEMPERATURE SETTINGS: The easy-slide control lets you chose from 3 electronically regulated temperature settings. SAFE ALL NIGHT: Equipped with our Beurer Safety System (BSS) electronic sensor technology, the TS15 will automatically switch-off to prevent overheating. MACHINE WASHABLE: Simply detach the power cord and temperature control and pop in your washing machine at 30°C.