I have scoliosis and alternate between side and back sleeping. I usually wake up 1-2 times per night and have a stiff lower back in the morning in addition to tight upper back muscles where my scoliosis is. I did some research and scoliosis treatment experts recommend a latex mattress topper and/or latex pillows. This made a tremendous difference and improvement immediately. I fell asleep quickly, did not wake up in the middle of the night and now wake up without the lower back stiffness and excessive upper back tightness. The latex mattress topper was a quick fix and more economical than going out and purchasing a new mattress. I also purchased a deeper mattress pad cover that was deep enough to cover the latex mattress topper and my pillow top mattress. The latex mattress pad topper is not hot; I do not have night sweats or get hot from it (the mattress pad cover that comes with the latex cover plus the quilted mattress pad cover keeps the heat away). The latex mattress pad topper did not smell; I opened the package and took it out and let it sit for about an hour and then placed it on the bed immediately. There was no odor whatsoever. The product appeared exactly like it looked in the photo and the quality so far is excellent. I have no complaints. Overstock has excellent pricing and the free shipping even made things better (since this is quite heavy). I highly recommend. I am now looking into getting some latex pillows since the latex mattress topper was such an improvement and success.