I am going to address all of the negative comments by some other reviewers, because i experienced zero of their complaints. There was absolutely no odor or fumes when we opened this, in the house, in winter, windows closed. Zero. I have asthma; I would have detected fumes when others do not. And I did so in the dining area of our small house with an L-shaped living room dining room, so it was pretty much 'in my face' for hours. 2/3 expanded in 3 hours. The rest of it was finished when we got up the next morning. Far less than even 12 hours. It did not tear. It is bulky, (3 inch queen size) so I had help to move it to the bed, but its not really heavy that way. We did not drag it or pull on just one corner; we folded it in half and carried it to the bed. Then gave it a tug or two to align it. No indication it would tear. Either I have a different product than the other reviewers, or some reviews are by competitors? Because all that was wonderful. Comfort: Fantastic! I have recently hit the point of osteoarthritis in my hip, and am a side sleeper...and it felt like I was sleeping with a rock under me. Not sleeping well at all, needless to say. The 3 inch foam eliminated that issue for me as much as could be possible....95% of pain and discomfort gone, vanished! Heat retention: I placed an old mattress cover around it, the kind that used to have some quilting but has been washed to the point it should have been trashed really...so just a touch of some insulation more than a sheet. The sheet I put on top was much heavier/thicker cotton sort of surface than any other sheets I have. The foam did retain some heat, but that was perfect for the arthritis in my hip, knees, feet. I will likely be putting away one of my two heavy blankets I have been using with a light quilted bedspread that is a good air block, and that's great. That former arrangement was too heavy and would get too hot and awaken me at night, but I needed that to get my joints warm and 'quiet' enough to sleep. Not anymore! The mattress topper gets very comfortably warm in just a few minutes. i am writing this in April in south central PA; temps have been in the upper 30s to upper 40s at night and our thermostat is set at 72 at night, though I have to close the vent in my small bedroom or i get roasted when the heat flows. The thermostat is that high because of the illness of my roommate and our 70 year old brick home is a bit drafty, needing windows and new insulation. I was quite comfortable having some gentle heat from retention by the foam on my joints, while my face and shoulders enjoyed the cooler room temp. Its wonderfully soft and cushiony. I was comfortable both in my normal side sleeping positions, and also when I had my head rather elevated on multiple pillows (which puts more pressure on the hips). I did not experience any difficulty at all rolling over, even though I am 5'10" and 195 lbs. I frequently roll over... so much so I use a queen bed all to myself. In fact, it was EASIER for me to roll over than it had been rolling over the hard mattress surface...my mattress is not a rock hard one, maybe the high end of medium firm. It has had about 6 years of regular use and has just recently developed just a touch of sag in the middle...just enough to increase pressure on my hip bone in certain positions....but this extra pressure disappeared with this wonderful topper. I would anticipate that because this is foam, that at some point it will begin to stay compressed and eventually require replacing. That is affordable at this price.... I see the same complaints made by products costing even four times what I paid for this ($90 plus sales tax). if/when I experience this, i will come back and update my review for a time concept. If I don't experience this within 6 months, I might buy a second one for a backup. The pricing was great, and necessary, because I also need to replace my chair in the living room,which aggravates my arthritis, and I couldn't afford both a good new recliner and another mattress...which might not have been good enough without a topper anyway. Extremely pleased at this moment!
