I needed a mattress of maxiumum firmness (on the sleep number bed, my number is 100!) My old mattress was sagging a little and I was starting to have back pain. I was about to spend thousands on a new one (which I couldn't really afford), when a friend suggested a mattress topper.I researched this thoroughly and decided on a dunlop rubber mattress topper. However, I came across the reviews of this one on amazon and they read so positively, I decided to take a chance. I am in Canada so I had to pay extra for shipping, duty, taxes, brokerage fees, etc.I have to say that I am very glad I ordered this. I have had it for several months now and it is holding up very well. I have never tried rubber mattress toppers before and it seems to be an incredible material - both soft and firm at the same time.I did not mind the smell at all...to me, it smelled sort of like vanilla oatmeal.I am thinking of ordering 2 more, for my sister and mother.Highly recommend this topper!