Our mattress was a bit too hard, so we decided to put a topper on it. There are many thicker than this one, so we thought that this would be right. As it turns out, a little thinner might have been adequate. We weren't sure we'd like the feel, so we bought this one, which was cheaper because it has no cover. In hindsight, I should have paid more and gotten something that was covered. All that said, it was a good buy and serves its purpose well enough.
I bought this mattress topper 3yrs ago my husband and I slept on it every night and wore it out. Not sure how long they are suppose to last. We loved it , it was like getting into a cloud. Bought a new one memory foam hated it , so hot. So I bought another one of this brand big bump it is ok but this one is the best !!!!!