Never purchased a mattress in a box before but thought we would for our spare room for guests. It was very easy to put together and even though the instructions state it takes 72 hours, however, it was completely inflated in less than a day. The top layer of memory foam makes it really comfortable and the mattress isn't soft or firm, it's the perfect medium support. Our son tested it out before any guests use it and he thought it was such a comfy mattress.  It's only been a few days but so far so good!