Add extra warmth to your bed without using electricity with this self-heating mattress topper that traps and reflects your body heat back to you. It's built with three layers that work together to boost cosiness a heat-reflecting foil layer, a thermal lining, and a deeply filled quilted top that combine to provide up to 7.5 tog of additional warmth. The super king size fits mattresses comfortably, and elasticated corner straps secure it in place so it won't shift or slip as you move about during the night. The cover and filling are machine washable at 40C and safe for tumble drying, making regular freshening up straightforward and fuss-free. The straps grip your mattress firmly, so fitting it is quick and simple even on thicker bases. The quilted surface feels comfortable against your skin, while the heat-reflecting foil retains warmth naturally throughout the night. Whether you're looking to cut back on heating costs or simply prefer a warmer bed, this topper keeps you snug through colder months. Set includes: 1 Mattress Topper. Suitable for super king beds. Size L203, W183, D5cm. Cover made from 100% Polyester. Non woven reverse. 100% Polyester filling. Secured by elasticated corner straps. Cover is machine wash as synthetic at 40C and suitable for tumble drying. EAN: 5012701569552.