This FULI trifold full-size mattress futon with medium firmness is the perfect Japanese mattress. This Japanese traditional-style bedding is foldable/rollable lightweight and can be put away quickly. This makes more space for the room to be used for other purposes. Japanese people traditionally use tatami with a futon mattress or shikibuton. Tatami mats provide a softer more comfortable base for a Japanese mattress. This Japanese bed mattress goes by many names folding bed portable floor mattress folding mattress Japanese sleeping mat etc.