My husband and I have
My husband and I have a king sized bed, but he prefers a very soft cushion, and I prefer a more firm mattress.
We got the Sleep Number, and it has hurt my lower back.
I read that getting two Twin XL toppers would fit a king sized bed perfectly! So I did some reason and read reviews, and this was the one I wanted most.
I got a medium softness topper and LOVE it! Totally got rid of my lower back pain.