The mattress comes In a box, I took it out and let it fluff up for 24 hours, it fluffed out great. The mattress is very comfortable, I like how it is a hybrid and hopefully it won't leave impressions like the full foam mistresses does. I've used it for a few days and have had better experience waking up with no back pain. The mattress seems  well made and will hopefully last a few years. I am happy with it so far.