This topper is OK. It's supposed to be 4lb rated for density. It doesn't feel like that to me, but I haven't measured it. My old (much cheaper) memory topper felt much denser. This one also doesn't seem to "remember" as much (rebounds faster). So it feels more like a regular foam topper than memory foam. It IS memory foam. Just doesn't feel like great quality. If I were to buy again, I think I'd look either for a different brand or maybe a 5lb foam? Maybe that "ultra soft" is just the opposite of what I wanted?