Update 4/6/22:After seeing my disappointed initial review, Marine Moon proactively reached out to me. They made it clear that even though my initial review wasn't horrible, they want their customers to be completely satisfied. They made things right. Excellent customer service.Original review --------I've never had a pillow top bed before, but after research, I recently learned that as a side-sleeper, it's something that would likely greatly improve my quality of sleep. Since I already have my mattress, I decided to simply buy the mattress topper.First, I followed the advice of another reviewer, and I let it "air out" and expand for a couple days before putting it on my bed. It definitely is NOT 3 inches thick even doing that. It's maybe 1/3 as thick as the picture used to advertise it - at best - but it's comfortable.Second, as several other reviews have said, the elastic straps to "hold it in place" wear out and become useless after about two weeks. I've started using fitted sheets as a way to try to keep it from sliding around.I will say that it's true. Having this pillow top has been great for keeping from waking up with a sore shoulder, and it's also provided some relief for my back.Overall, this is ok, and would be 5 stars at half the price or if it was 3 inches thick as advertised.