It’s about as thick as a fluffy sleeping bag and for the price, I was hoping for just a little more cushion.
It would work on top of an old mattress to provide more cushion against feeling springs, but as a futon mattress on its own, this doesn’t cut it.
It also has a hard ridge down the center where the mattress was tightly folded for packing that has never expanded or flattened. As long as the mattress is laid so that the ridge is pointing down, it’s not bothersome, but for the price, I had hoped for a better experience.