when this mattress arrived in the box I was confused as to how a rolled up and flat-looking thing could become a bed. After carefully opening up all the wrappings, VOILA. Give this mattress a day or two to air out the scent that comes from the packaging. I set it up in a guest room after 48 hours, and then slept on it to determine if I could let guests use it comfortably. It's wonderful and I love it! For the money, the best comfort you can buy. I made one mistake though; I meant to purchase a queen sized mattress but must have accidentally hit the button for a full size. I didn't realize this until it was opened and "aired out". That genie was never going back in the bottle so I was stuck with it even though it is on a Queen platform frame. Not horrible, but I wish I hadn't made that mistake.