Although the product came highly recommended by two nurse friends, I wasn't really expecting much. I was very happily surprised after only the first night I slept on it. The dull ache in the small of my back that I used to have is gone. My only suggestion to avoid confusion would be to notify purchasers that the foam arrives folded in half and then rolled up tightly. Even though it looks like the product couldn't possibly be large enough to cover the entire bed surface, it is once it's unwrapped.