Designed in collaboration with American Leather, our exclusive Fuller sleeper sofa beckons with the graceful sweep of slope arms and generous seat and back cushions. When guests come to stay, the sofa opens up to a super-comfy king mattress that stretches out to a full 80 inches in length, up to 5 inches longer than traditional sleeper mattresses. Equipped with the latest technology to ensure a great night's sleep, the mattress is topped with a one-inch layer of ThermaGel that provides support and keeps sleepers cool.