I admit I was nervous about buying a mattress without trying it first. I also thought maybe 8" would be too thin. I am happy to report my worries were unfounded. This mattress is heavenly. The cover was on already (no need to stuff it inside), there was no odor, and it puffed up in a couple days. I have been very comfortable with no sore back since I got it. I am a heavy person and it is more than adequate for me. Purchase without worries, definitely worth the money and then some. Enjoy!