If you're in the market for an electric blanket... buy this instead... I live in an old house with no central heat and use electric radiators to heat my home. I do like sleeping in a chilly room but not a chilly bed, hence; I have always used an electric blanket. Last year I adopted a shelter kitty..he likes the bed and gets under the covers.. no longer a very safe place for an electric blanket. My friend in NH told me about mattress warmers, I had never heard of them. I bought this one and slept with it for the first time last night.. I slept all night !!!! No more cold patches here and there under the blanket.. what a nice, even heat and I can trust this with kitty. I am SO happy to get the bulk of an electric blanket off me. I love this, I really do. Perfect fit, perfect heat, perfect night's sleep. Happy New Year!