This is thick, almost too thick for me, but if you’re looking to really sink in, then this is the topper for you. It’s not super supportive. My husband really loves it. So far it’s not hot. My biggest complaint is that it’s abou 2” short around all sides of the Cal King bed. So it sort of flips up and in. It’s too thick to get under our current mattress pad or fitted sheets, so we have been using a flat sheet draped over. Overall a decent buy.