I am giving this very well made 3 inch topper five stars for the quality of the material as well as the large elastic bands in each corner that hold the topper in place. The stitching on the baffles is perfect as well. That said, I received this product 4 days ago, knowing that the instructions were to let it expand for at least 72 hours. Mine is taking longer, but I am determined to let it expand totally before I sleep on it. I will come back to update my review the day after I put it on my bed. Hopefully, within the next 4 or 5 days.
UPDATE After 5 days waiting for my topper to fully expand, I gave up and put it on top of my Temperpedic mattress which sleeps very hot. So hot it wakes me up. The topper made a significant difference in heat transference back to my body so that I was much more comfortable! Also, it felt cloudlike under my aging, inexplicably sore body. I got the queen size topper and it fits my full sized bed perfectly. Im very happy with this product !