A mattress in a box seems iffy-- but we went ahead and ordered this one. We are thrilled with it! The box was heavy but two of us managed to get it opened and the mattress in position. Keep in mind that it needs room to "flop open" when you let it out of the package, and it needs a day or so to puff up after being compressed in the box. The next day it was a wonderful, comfortable mattress. We're very happy with this purchase.