I bought this mattress specifically for the Cool Max cover, as I have heard numerous stories of people reporting how warm memory foam mattresses are, and we have had a memory foam mattress pad that felt quite warm. When the mattress arrived, it was quite compressed, but opened up fully in less than 30 minutes, and had no smell to it. We slept on it that night. I must say that it was much firmer than I would have expected, compared to our old ********* mattress, yet it was comfortable, and we didn't wake up feeling like we'd slept on a firm mattress. It was very cool, due to the breathable Cool Max cover, exactly as I had hoped. My wife needed a few more nights than I did to adjust to the firmness, but we have both slept well on it, and I've had fewer pressure problems than I did with my old mattress. In fact, I've had no pressure problems at all, waking up without the occasional back ache, shoulder ache or other ache, caused by my sleep position. We have used it for about 30 days now, and are getting more used to it. We really like it and I'm pleased with the price and quality. I would recommend getting a waterproof cover, to prevent any stains. Additionally, if you buy a memory foam mattress, get the softest one you can, unless you like a really firm mattress, and realize that even a soft one will be somewhat firmer than a comparable conventional mattress. Overall, we are very pleased with this mattress.