The first night we slept on the new memory foam mattress topper I slept better than I have slept for years. I had been waking up with stiffness and aching muscles. We've had it for several weeks and I am still sleeping very well. We had a feather topper that we replaced which was also purchased from OS and I was skeptical about this mattress topper but I am glad a took a change. I would highly recommend this product.