We have been sleeping on the mattress for about 3 weeks and it is wonderful. The gel keeps it from getting too hot. I have back problems which have improved since I started sleeping on this mattress. I also sleep deeper than I have in years, no waking up constantly because I am so comfortable. This mattress is hundreds of dollars cheaper than some we researched but the quality is extremely high. It arrived quickly and we slept on it the same day we rec'd it. There was a slight chemical smell the first day but that quickly went away. In addition to helping with my pain, I have noticed that my allergies have subsided. This was a great find. I would not hesitate if you are looking to buy a good night's sleep.