It’s two mattresses in one! But in a bad way. Half of it is firm, the other half is soft and the difference between the two is a ridge down the middle so you have to sleep on one side or the other because it honestly feels like you’re going to roll down hill if you lay in the middle. I admit that it’s not impossible to sleep on. Just sucks in the middle of the night to realize you have to wake up and move to one side or the other because you accidentally rolled into the middle in your sleep