I got this mattress a few weeks ago after looking and reading several different reviews on different mattress toppers. When I opened the package the chemical smell was rather strong, but after letting out to air for a few days the smell is almost gone. It is very comfortable for winter time or cooler homes, but I find that even when keeping my room a cool 65-68 degrees the mattress keeps body heat so well that half way through the night I'm kicking off all covers trying to cool off. So I would not recommend if you can not sleep well when hot but for aching joints and/or hip discomfort it helps. I still highly recommend this product considering cost, quality and overall comfort.