I bought these for my guest trundle bed but, of course, I had to try them out! I felt like Goldilocks, not too firm, not too soft, it was just right. Buying the 7" assurred me that the second mattress would fit the trundle and easily glide under the top. I used to have to put pieces pf block under the legs to allow the old mattress to fit under it. I will no longer feel bad for my guests becasue they have the best mattress in the house! They rolled out and filled out fast! Very good buy and I am pleased.