Very hard.

Got it, it was much harder then the store model, too hard. I woke up in the morning, with massive pressure point point pain, and loss of blood. BUT my back was just awesome on it, PERFECT. I had to return it as my hip and shoulders where hurting, but my spine was the best it had ever been. Since then with the new mattress that replaced this one, my pressure points are all fine, BUT I do have back/spine pain.