THREE LEVEL HEAT CONTROL Slide switch offers low, medium or high warmth, and the 75W element pulses automatically to maintain the chosen comfort through the night while costing only pennies compared with central heating on frosty evenings. FULL DOUBLE SIZE COVERAGE Evenly spaced wiring distributes gentle heat across the entire 137x190cm surface, removing cold shoulder and foot zones so both sleepers enjoy balanced cosiness in spare rooms, rentals or winter cabins. SAFE REST ASSURANCE Sensitive overheat sensor plus BS fused plug cut power immediately if temperatures rise beyond safe limits, giving peace of mind for families, older relatives and shift workers who need undisturbed, worry-free sleep. SECURE CORNER STRAPS Four elastic ties anchor the under blanket firmly to the mattress, preventing rucks beneath sheets and keeping warmth even no matter how much you move during the night. MACHINE WASH SIMPLICITY Detach the slide controller then launder the quilted polyester blanket at 30°C to remove spills and dust, keeping fibres soft, fresh and allergy friendly year after year without costly dry cleaning.