We have had ours for 10 years now, and it sure has made a difference. We had just gotten a nice new mattress which was good quality, but I would wake up sore in the mornings, feeling like I had played NFL football all night and had lost. When I sleep, I lie still all night, so to be on a hard mattress will make me very sore. I needed Ibuprofen to get going to work. I had no idea what was wrong until my husband bought this mattress topper because the mattress was too firm for me. This topper was just 4 inches thick, and he put it in place on top of the mattress and then put on the fitted sheet. I was skeptical. But it conformed to my shape and felt great to lie on. I could sleep all night and not be sore. And I had no need for any more Ibuprofen, because I wake up feeling fine in the mornings. I fully recommend this product to those needing a softer mattress but who simply need to soften the one they have now rather than buying a whole new one.