I bought the "medium/firm". It's firm, no medium & that's why I gave 4 stars instead of 5. I would have liked a little more softness.  I was beyond worried when it arrived in a box that was about the size a mattress topper would come in. I thought I'd messed up & ordered the wrong thing. I went online to review my order to make sure I didn't mess up. After confirming I hadn't I opened the box & followed the directions. It's absolutely amazing to watch it "grow" into the size mattress it's supposed to be!! I will definitely order another mattress if I need more beds.