I have had this for 3 days and slept like a rock. So much comfort , haven’t woken up with any back or pain in my shoulders or arms , going to buy another for later in the years , just in case I ever need to replace. Have to have a back up ,comfortable toppers are hard to find. Great thing about this one,it’s a fitted topper. I don’t suggest using a mattress pad on top , it’s smashes the comfort, I doubled deep pocket fitted sheets. Amazing comfort.