Instruct: Classify the given Amazon review into its appropriate rating category
Query: Nice and thick

I bought this to make my pullout sofa more comfortable. Currently, I am on day 3 of airing it out. It’s not bad, but there is a chemical smell that I hope goes away. We haven’t slept on it yet. I have yet to figure out how to store it, as the sofa wil not always be in “ Bed mode”.