First time ordering a bed-in-a-box and Iove it. I’ve only slept on it for 3 days but the comfort level is good so far. I think as others have mentioned, it might take some time for your body to get used to the new mattress. No strong chemically smell once it inflated from out of the box, but I did let it air out most of the day before I slept in it. So far great mattress for the price point!