I had a pillow-top mattress before this one and it was very soft. I have several bulging discs in my lower back and this definitely conforms and supports my back so much better. With the old one I woke up with numb spots down my legs and with this one I did not. I slept very well and did not wake up in the night as I usually do. What a blessing to get a full night's sleep!
This is a very light weight mattress and quite easy to put on the bed. In fact, when I got it it was so light I couldn't believe it would be firm, but it really is. It's a very pretty mattress as well. There seems to be a 2 or 3 inch layer of memory foam on top of the very firm portion of the mattress, so the mattress conforms and supports you however you sleep. I'm usually a side or maybe a back sleeper. Being able to sleep without being able to feel springs is great, too. I like that is is higher than my old mattress so the sheets fit much better. I would highly recommend this mattress to anyone with lower back problems. It is wonderful and I wish I had gotten this sooner!