i suffer from back pain when sleeping on a regular mattress. The only thing that's ever completely eliminated the pain is the aerobed mattress topper (even better than the regular aerobed mattress.) I'd wake up feeling like a million bucks! The thing was a miracle! Well, sadly, the mattress topper developed a slow leak, and then the leak grew faster, and they no longer make it, so I couldn't get another. Finding the leak has proven difficult. So, completely disheartened, I began looking for a pop-proof topper. I got this one based on the reviews, and the fact that it's "green" so there is less guilt about carbon footprint, and the manufacture of this item. I wasn't keen on gettting a foam topper, thinking about the day it's got to leave my house, where does it go? a landfill? I don't feel great about it. This thing arrived quickly, and I unraveled it for the recommended 48 hours prior to using. It did have a slight smell, but nothing I could smell unless I put my nose right up to it, and even then, it wasn't offensive. It aired out fine in the spare bedroom. The first night was ok, it was good. I had also ordered the pad cover from overstock but that didn't arrive for another few days. When the pad cover finally arrived, I put it on the mattress topper and immediately didn't like the feel of it anymore. It seemed to sag in the middle, where my hips are, and the pillow now seemed to be too high. I have wakened up with neck kinks (some days, severe) for the last three weeks, and last night I finally tried to sleep without any pillow at all and found that to be better, though the area where my hips are sinks much lower than the rest of the body. (I should mention that I'm a tall, thin woman, I'm 5'-10" and weigh 140 lbs.) In the month I've had this mattress topper, it's developed a noticable sag where my husband and I both lay, and I'm about to try to remove the cover and flip it to see if it does any better. Still, it's better than nothing at all, but for over $200 I had hoped for an item that at least would last a few months, and not a week or so. Hope this helps.