The Super 8 takes a traditional, 8 inch thick, all-cotton sleeping mat and swaps out 2 of those inches in the center for high-density foam. This provides a little softness and resiliency, with the foam helping to keep the futon's shape longer over time. The estimated daily use lifespan of this futon is 3-4 years, even longer if only used occasionally. Available in Twin, Full, Queen and King mattress sizes only.