This mattress is fabulous! I bought it for my 93 year old mother who was not pleased with the first two I bought her (not Serta Perfect mattresses.) The first mattress was too much foam. She couldn't get out of her bed! The second mattress was supposed to be firm, but it didn't have enough cushion to be comfortable....and eventually sunk in the middle. I knew exactly what she wanted by the third mattresses and looked carefully for a FIRM MATTRESS THAT WAS ALSO COMFORTABLE. She absolutely loves it and wouldn't change a thing about it......not even a mattress cover with a little cushion. She said "When something is perfect, don't mess with it!!!". She sleeps better and is in a better mood. So, the morale of this story is, "When you want a firm mattress that is comfortable, the Serta Rosehill Firm Mattress is truly the PERFECT SLEEPER. She will be sleeping on it until the day she dies.