The sealy 10" memory foam mattress arrived in a 4 foot box. It was easy to take out and roll on the bed. It is best to open the plastic wrapping with scissors. I opened it with my 7 year old. He said he liked the cool air sound that releases once the mattress is expanding. It will take about 48 hours recommended by sealy to fully expand but it is a full size  mattress right after opening. I would say it feels like it is on the medium soft side. It is very comfortable and pillow like. It is great for sleeping on your stomach or back. The shipping was very fast and convenient. I would say this mattress is great for children, anyone in college, and even to be used in a guest room.