I don't usually leave a review but I hope this helps others with lower back issues. I purchased a new mattress about a year ago after telling my chiropractor I was experiencing pain and a stiff back each morning I woke up. He stated it could be my mattress and suggested a few different types of mattresses which I purchased a semi firm one with a pillow top for about $2200. The pillow top was also a little on the firm side. Although I woke up feeling better, I still had some pain and was somewhat stiff. I finally decided to give a mattress topper a shot to see if that my help so after some research and reading many reviews, I decided on ths Bodipedic 2 inch Memory Foam Topper. I've had this less than a month but felt much better after the first few days. My lower back pain / stiffness when I wake up is hardly noticeable now. I would definitely recommend this first to anyone who may have a lower back issue that is thinking about purchasing another mattress. The mattress I had prior to my mattress purchase last year was only a couple of years old and had I purchased this mattress topper first, I don't believe I would have had to make that purchase. The topper arrived within a few days of ordering and prior to the purchase, it states in the add you should remove it from the vacuum packed wrapping and let it air out a couple days and allow it to form to its normal size before use. However, the instructions that came with it states you can sleep on it that evening. I took it out of the packaging and within a few hours, it was fairly close to it's projected size. I put it over my mattress that evening and slept on it without a problem. It did have a slight odor but seemed to dissipate within a few days. This topper is a little more expensive than other toppers I researched but is well worth every penny!