I just received my mattress topper. it was rolled up in a real nice box and when I unwrapped it, it puffed up immediately.. I  I must say it has hardly any new foam smell at all. 
  It's been over 2 months now and I have to say I am sweltering with this mattress topper so much so that I now am either going to get a new bed or purchase another topper which I'm very afraid to do because this is the third topper I've bought already but before you buy this, know already, that you will be sweltering hot.. it's very very warm.. I have reduced it from three stars to two,  only because it's comfortable