The last time I bought a foam mattress (from another vendor which has gone out of business), it was folded in half from top to bottom and put in a cardboard box with a plastic suitcase-like handle. It was not shrink wrapped. It was easy to remove from the packaging and put on the bed. I didn't have to wait before I could sleep on it.

This mattress was rolled very tightly from one long side of the mattress to the other, put in shrink wrap, and put in another layer of plastic. First, although it wasn't heavy, it was too awkward for me to get it upstairs by myself. (I live alone, and have arthritis and MS.) I needed two friends to get it upstairs. Then one of them had to cut very delicately through the shrink wrap because it was so tight it would have been easy to cut through the mattress itself.

The specifications told me to wait 48 hours before using the mattress, to allow it to return to its 6-inch depth. One week later, it's still only 4 inches deep. I'm returning it.