When, I slept on this mattress, it felt a little rocky, and a little bit, like, I was sleeping on a boulder. The more I slept on it, I felt at ease, and felt comfortable enough to enjoy my sleep. I truly recommend this mattress to all my family and friends. I can't give it a perfect 5/5, because of one factor, it is that it takes time to get used to. At the beginning, it will feel like your back is on a big rock on the side of a mountain. At the end, it will feel like you are on a bed of flowers. Like, everything it takes to time to get used to. Because of this, I am going to give it a 4.5/5. Thank you! for the opportunity, and I am forward to seek more opportunities as given. I am excited for the next product review...