This is a wonderful mattress! I love it. This mattress is soft but supportive. I don't know how they did it, but they did! It arrived in a tight plastic wrap inside a box. Following the directions, we began to cut the tight plastic off, and the thing just swelled out of the wrapper. Cut faster, laughed my husband. Inside 5 minutes, we had a perfect, lovely, ready to sleep on, mattress. No waiting 24 hrs for it to expand. No waiting at all! I can't believe the low cost and the high quality. We liked it so much we bought another one (Cal King) for another room.