Dreamland Heated Mattress Protector Quilted Cotton Dual Control King 5 "How did I live without you!" GEM 30 January 2019 This is our first electric blanket since we've been married, 50 years now! It is the Super King size and fits our deep mattress beautifully, which can be a problem as it is a very deep mattress with some fitted sheets not a deep enough fit. Just hope it doesn't shrink when washed. The dual control is perfect as I am in bed first. I find the 5 minute warm up just perfect, although with the colder weather I've been leaving it 7 minutes. Our cotton mattress protector is now redundant during the winter, this is so similar with no signs of wires. A note from the team Thank you for your review. We're delighted this heated mattress topper is working so well for you!