It took me a long time to decide on a topper. I was between getting a 3"-4lb or a 4"-3lb. I read a lot of problems about bad smells and feeling like you are sleeping in a hole. I decided to give this topper a try based on the reviews and I love it. We have had it for 2 or 3 weeks now. I was experiencing severe hip pain because I am a side sleeper and nearing the end of pregnancy. I wanted something to relieve the pressure. My pain went away within one week of sleeping on the topper. I highly recommend it to anyone who needs pressure relief.Lastly, their is hardly any odor; you really can't smell anything unless you sniff it up close. It fluffed up immediately; we did not have to wait. And we are not hot sleeping on this topper at all. Hope this helps!