This topper has completely changed the way my husband and I sleep! We have a 5 year-old, king size, no flip, pillowtop mattress that has desperately needed replacement for the past 2 years. Since it is a no-flip, we have developed 'grooves' in the areas where we both normally sleep. Financially we just have not been able to afford a new mattress. We were so desperate for better sleep, that about 6 months ago we flipped it anyway and had been sleeping on the bottom side! When our mattress pad recently had a dryer incident, we came to Overstock to replace it. For the price of a quality mattress pad, we were able to get this foam topper and a standard mattress pad to cover it. The difference was immediate and dramatic. No more arms/hands falling asleep & tingling at night, no more back aches and most importantly sleeping without waking (or sometimes even changing positions!) for the entire night. Yes, some complain about it being a little warm to sleep on and I would agree. We are both rather 'hot' sleepers as well. However, I honestly have to say that the other benefits FAR out weigh a slightly warmer night's sleep. Buy one now, and give one as a gift to someone you know who looks sleepy!!!