This sumptuously soft fleecy underblanket is cosy by its very nature but using ultra thin wires improves its efficiency enabling it to heat up ready in just 10 minutes yet thanks to its integrated sleep safe automatic overheat protection shut off system you can use the blanket with complete safety and confidence the detachable dual controls enable you to adjust to different heat levels on either side of the bed according to preference fully fitted for total mattress coverage it has a de