First let me tell you if you are wondering how it will ship it comes in a box that is easy to manage by the UPS guy. Once you open the mattress ( we got the cali king ) then it will be wrapped in TIGHT plastic. You of course will carefully cut through the plastic. The mattress will expand into the full size you ordered. It will take a few hours for it to have it's full shape. We were very skeptical as we had never ordered a mattress like this before. I am overweight. My husband is not. My main concern was my back ache and pain. I weigh almost 275 and am tall. So for me I wanted comfort. I read other reviews. First the bed didn't have a smell like most people talk about. We also had the best night sleep! I got up this morning and the bed reshaped into it's original shape. I laid on it again tonight and though WOW! THIS BED IS GREAT! I like a firm bed. And this bed is neither too firm or too hard. It's just right. Now keep in mind that it's true memory foam retains heat. So you will stay WARM between the covers. Overall I give this bed 5 starts for comfort, size was on the money ( once it blew out all the way ), and no smell! Great night sleep~! Thank you OVERSTOCK!