I have back problems, and complain about it a lot. I went on a trip and stayed at an AirBnb and it was the best sleep of my life. I didn’t want to leave the room and site see it was so comfortable! After I left, I just couldn’t stop thinking about the bed and gathered the courage to ask the host what bed it was. I was thinking it was going to be too expensive anyway because I had such great sleep. She sent me the link and to my surprise it was so affordable, but unfortunately it was sold out in King size. I saw the new model with the charcoal and I decided to take a chance on it and I do not regret it. I have never loved a bed so much! Thank you!