I’ve owned a queen size Polysleep mattress for two and a half years. It has been an exceptional purchase. The prompt delivery, easy unpacking made for a quick set up to better sleep. The mattress has kept its shape and is as comfortable today as when I first bought it. My boyfriend’s king size bed is firm but not as comfortable so I recently bought the Polysleep topper. He was initially doubtful but  he has been pleasantly surprised with its comfort. I was in a car accident a few years ago and Polysleep is the best mattress, most comfortable and supportive, that I’ve ever owned! I’d buy it for our guest bed but I don’t want guests to be too comfortable!!