Unboxing the king size mattress is a bit of chore if you are not in pretty good shape, fur us it was a bit of a chore but not too difficult. We previously bought a queen size mattress and that was understandably easier. We use the mattress on a simple frame and it works extremely well. The matters is very comfortable in any sleeping position. The zipper cover is a nice touch for cleaning that although we have only had the mattress one month and don't expect to clear the cover for some time.I recommend Casper mattresses highly.