I originally was going to send this back. Be very aware that this product will enhance the deficiencies of your current mattress if it is not flat and level. Luckily, my mattress issues were able to be corrected and I was able to put this back on my bed for a second try. What a great nights sleep I had!!! My expensive pillow top mattress was just too soft. This 4lb density topper is just what the doctor ordered. The only negative I can say is that even with following the unpacking instructions exactly, this product came out of the packaging with multiple rips and tears. Luckily they were all on one side so I could out that side down.