Milliard 4.5-Inch Memory Foam Replacement Mattress for Queen Size Sleeper Sofa and Couch Beds (Sofa Not Included) - QueenThe Milliard Memory Foam Sleeper Sofabed Mattress is THE premium pull out sofa mattress replacement. Ditch your old bed spring mattress and feel the difference that foam makes. Sweet dreams are made of this. Our bi layered mattress combines a 3in firm polyurethane foam base with a 1. 5in soft memory foam topping that slowly conforms to your body contours and still provides adequate support thats compatible with most folding couch bed frames and is