My mattress is too firm. When I slept on my side, my shoulder was jammed between the mattress and the neck or back. (Yes, it was as uncomfortable as it sounds). I read the reviews on this mattress pad, did lots of research (on & off the 'net), debated 2" vs. 3" pads, visited a mattress store to try out latex and different coil mattresses (comfortable but expensive-- and no guarantee of what it would feel like in my home since floor models are always softer than new mattresses). Ultimately I decided to buy this a month ago. Instant comfort! No problems with the smell. The pad does have to be handled somewhat gently since it can break off. Thanks to other reviewers who mentioned this, I was prepared and careful when opening the bag/straightening it on the bed. I have no idea how long it will deliver relief. But if I have to replace it every 18 months, I would still recommend it.