I purchased one of these for my son and he loves it so much - said it is the best night's sleep he's had in a long, long time. So a few weeks later, I purchased another one for my daughter. She loves hers as well. Would highly recommend this. I really don't have anything negative to say. There was no bad smell (which I have heard there can sometimes be when you first open the product) and it was easy to 'install' - the fitted mattress cover that comes along with the topper to hold the product in place on the bed is genious!