I bought this mattress because I could only sleep for about 4 to 5 hours a night without waking up with a bad backache. We got this mattress in, in four good sized boxes all vacuumed down. It was easy to unpack and let air out and all of a sudden it was full size. We have been using it now for about a year and it is the best thing I have ever bought. I can now sleep for 8 hours or more without a backache. What a relief. If we feel like a little firmer mattress or maybe want to go soft for while we rearrange the foam pieces and it is like we changed to a different mattress. I would highly recommend this to anyone with trouble sleeping with a normal mattress.