Although probably this is a great mattress for some, it did not work for us and had to be returned. I felt comfortable sleeping on the mattress and especially liked the feature of being able to remove the top cover for cleaning using it's well-built zipper. However, this mattress had an off-gassing smell that lasted at least 5 weeks. It is primarily a foam mattress with very little in coils. Foam does have an initial off-gassing issue, but for this mattress, it was extreme. We tried a variety of ways to reduce the smell to no avail. Also, the bottom of the mattress had a fabric cover which was installed with a flimsy zipper. I have no idea the purpose of this zippered portion and it was defective upon delivery. The mattress could not be repaired at our home and had to be returned. We ended up replacing it with a different brand that did not have an off-gassing issue.