Add extra warmth to your bed with this self-heating mattress topper that uses heat-reflecting technology to keep you comfortable through colder nights. The three-layer construction combines a heat-reflecting foil with a thermal lining and a deeply filled quilted top layer, providing 7.5 tog of warmth without needing electricity. It's designed for king size beds and fits easily over your current mattress with elasticated corner straps that grip securely and stay in place. The heat-reflecting foil works with the thermal lining to trap warmth naturally, so you can stay cosy without extra heating. The elasticated straps make fitting quick and straightforward, even on thicker mattresses. It's machine washable at 40C and tumble dryer safe, so keeping it fresh is simple and practical. The deeply filled quilted top layer feels soft and supportive, while the thermal lining helps retain heat throughout the night. Whether you're looking to add warmth to your bedroom or reduce reliance on heating, this topper delivers comfort and functionality you can count on. Set includes: 1 Mattress Topper. Suitable for king size beds. Size L203, W153, D4cm. 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: 5012701569408.