Not suitable for children under 3 years old. Featuring nine heat settings, Snuggledown's luxurious mattress topper will help personalise your temperature with its useful climate zone control. With extra foot warmth to keep your whole body toasty throughout the night, undisturbed by cooler spells. The single size features one controller, while the double, king and super king sizes feature two controllers. This cosy cold weather companion incorporates a quilted comfort layer to offer enhanced support when paired with your mattress. A washable, 180 thread count cotton cover also ensures you maintain a fresh and hygienic feel throughout the topper's lifespan. The natural cotton casing acts as a breathable surface to wick away moisture and further regulate your temperature. Removable cover: do not use if wet. Cover must be detached from electric blanket before washing. Ensure product is completely dry before using. Electric pad: do not use if wet. Before washing disconnect the heat controller from the electric blanket. Ensure product is completely dry before use.