The mattress is great. The pictures were taken about 2.5 hours after opening, and it was already nearly expanded to the size its supposed to be. I ordered a 12, and it is, in fact, a 12 mattress. It is also super comfortable. This is for our guest bedroom, and Im tempted to sleep there instead. Just a heads up, the directions on this mattress actually say to jump on it, roll around on it, and get movement on it while its expanding to help it. I know others say, Dont touch it for 72 hours, but not this one. There is no chemical smell to it. Im happy with the purchase and would buy it again.