we received this topper less than a week after ordering, which was great! I could not wait to get this on our bed as our king was too hard and left us sore and achy every morning. We aired out the topper for about 5 hrs. I can not begin to describe how much better our mattress feels! I'm usually a side/stomach sleeper, but find when sleeping on this topper I can fall asleep on my back and wake up in the same spot in the morning. We received our mattress from a friend and let me yell you, I would compare it to sleeping on rocks. We wanted to see if we could save some money and get a topper before going out and purchasing an expensive bed, so I'm so pleased that we gave this a shot! I would reccommend this topper to anyone looking for more comfort. I really have nothing bad to say about it. I've noticed that people had commented about the smell. Ours was minimal and only lasted a couple days. The smell is comparable to a latex type smell. I'd still love this topper if the smell never went away, that's how much we love it.