I have compressed/inflammation of lumbar discs and arthritis is developing in the hips. My existing mattress is very hard. The mattress is however in very good condition, so I did not want to spend a lot of money buying a new mattress (like a memory foam mattress, sleep number mattress, etc.). The Slumber Solutions 3.5-inch Full-size Memory Foam and Fiber Mattress Topper seems to be helping (less pressure on hips and better support). I also purchased a kneeling chair. Both the topper and kneeling chair are probably helping to lessen lower back pain that I have especially in the mornings. The Slumber Solutions topper looks good and is well manufactured. O.com's price was great also. I am very pleased with my shopping around abilities!!.