I've read several very favorable review and so I anticipate a five star performance.. If I am not completely satisfied after giving my body time to adjust as is recommended, I will have to contact customer service to resolve the issues. I love the notebook they included, and the added humor.. The ten year guarantee is wonderful. The delivery took longer than expected due to COVID so I had to exercise a little patience. I'm hoping it was well worth the anxiety. Sleeping on this mattress, I hope, will make me forget it.