I have a memory foam overlay that I bought 1/2 price at kohls. When my bull dog was young he peed on it so I threw it out . After two days without it I was buying another one I love the overlay/topper . When I can afford a new mattress I hope to be able to get one of these. I also use a memoryfoam curved pillow,I have neck problems/bad disc etc,iyt has made a world of diffrence.