We had replaced our California King waterbed mattress with an air mattress which developed a leak. Since we couldn't find the leak we decided to try this memory foam mattress. I must say I am pleasantly surprised. It fits perfectly, is the right depth, and extremely comfortable. It arrived quickly and was ready to use in just a few hours. There was no odor whatsoever. We really like the firmness and were surprised at how warm the mattress keeps us even on nights when the house is very cool. I no longer need to use an electric mattress pad (which is good because the instructions say not to use one with this mattress). We have been using it for about a month now and my husband and I (and our cats) are sleeping very well on this mattress.