Rutger Puts
Novice
We tried a 6” Milliard trifold mattress (Amazon) and found it to be too thick. Not just in the foot well but also it sticks out above the green skirts by the doors so bedding easily spills out. Went with the 4” Millard and like it very much. I did open it up, cut off a 2 inches to make it fit better between the doors.