The combination between a firm mattress and a soft top is perfect. Support and the comfort of a sumptuous topper is a tonic to my aching joints. Not sure why a reviewer said this combination doesn’t work and didn’t find it comfortable, it’s like sleeping on a cloud. We both woke refreshed and I could even sleep on my favourite side, which I haven’t done for a while because of arthritis. Very expensive, but if we sleep like this every night, then it’s worth every penny.