Beautifully crafted traditional japanese design tatami floor mats, offered here in 4 sizes, note too that we offer 4 more sizes on amazon. durable double weave rush grass stretched onto 2″ thick, kiln dried dovetailed hard pine frame, with a tyvek like material moisture barrier bottom to resist floor level dampness. use several to cover floors in many configurations, our 36″ wide tatamis are available in 3 lengths, 3, 6 and 7 feet long. use a single mat as simple decorative platform on the floor, raise off the floor with patio blocks or wood blocks, add cushions for an attractive reading or meditation space-put a tatami mat against a wall for a sofa back. tatami mats are a popular alternative platform bed or futon sofa, right on the floor or wood slats raised on patio blocks. a tatami mat on it’s side behind a platform bed makes a great looking and comfortable head board. a single 38″ by 80″ works for a twin size mattress, which normally measure 39″ by 75, use two 30″ by 80″ for a standar.