Got this about a month ago and wanted to give it a try before I write an honest review  I am 100 giving this 5 stars. We have a “dip” in one side of our king mattress so we wanted a cover besides a foam one (since our bed is already a foam mattress) and this filled the spot perfectly! Keeps us cool during the night  would highly recommend for anyone looking for a thick topper.  It even has the straps that go under the bed to keep it from shifting (also highly recommend using)