I wanted to give this a proper test. The instructions say that over 1-2 weeks, the mattress reaches maximum size and comfort. That is exactly correct. Over the time I have used it, I am shocked at the comfort. I use to lay awake fighting to fall asleep, with this mattress, I am asleep within minutes. I have some back issues, but with this mattress, I wake up relaxed and not in pain. I am blown away and I am recommending this mattress to everyone I know. Thank you Influenster for sending this to me! It was exactly what I was looking for.