This would allow that room to be used for other purposes. The traditional Japanese futon was placed on a tatami mat on the floor at night for sleeping, and the futons would be rolled back up or folded in the morning and stored away to allow the tatami to breathe.

With a twin bed on top and a full futon on the bottom it creates a different setting to a room. The bottom frame can be pulled out at night to be used as a bed for sleeping. A futon bunk is probably the most innovative bunk beds to date. The word "futon" originated in 1876 in Japan, it is said to mean "bedroll" or "place to rest".

This is a great piece of furniture for children and dorm rooms, and an answer to your space saving needs. The Merriam Willis dictionary defines "futon" as a mattress that is usually filled with cotton and placed on the floor or in a frame for use as a couch, bed, or chair. The futon and frame on a futon bunk bed can be folded during the day so the futon is used as a sofa for lounging and allowing you to maximize the space in your room. Consumer Product Safety Commission (CPSC) advises.

The Western futon attributes the same concept.