I have tested several memory foam toppers this one is, by far, the best. I have slept on a genuine tempur mattress (queen) for years. We needed the extra space in our master bed, so we combined two rather firm twin coil beds in to a king (very hesitant). The shipping and arrival was very quick, as always, from Overstock.com. The topper had a slight smell but nothing too bad, we slept on it after about 15 hrs of airing out. I was concerned about the size when it arrived (too narrow and short) but it stretched out nicely to fit perfectly (78X80). The claims about heating up when sleeping (I live in FLA) can be minimized by using a quality mattress pad (Royal Velvet Big and Soft) on top of foam topper. IMHO this is the best alternative to a true TempurPedic mattress and A LOT less money. If you only take one piece of advice, buy a minimum of 5 lb memory foam, you get what you pay for!