This is a great product! I first bought it in the queen size. I bought an extra firm mattress in my guest room for my parents and even they thought it was too firm. This foam really saved me form buying a new mattress by adding jus the right amount of cush! I married my husband 10 years ago and our deal was I would sleep on his waterbed until it sprung a leak and then I would get equal sleep time on a mattress. That event happened 7 years into the marriage and for the past 3 years he has been complaining about his back hurting on the pillowtop mattress. Since he has 4 years to go, I bought a California King memory foam this time. We rolled it out around 6 pm and by bedtime, no odor and it was fully expanded. Great sleeping for him, my only complaint is that it is so cushy, its almost hard to turn over in. Great price, great product, great shopping, etc, etc. Bonus--my mini-dachshund loves the free pillows!