Shikibuton: The Foldable Futon

Combine three foam blocks, about 21 square feet of fabric, and your personal sewing skills and you can make a shikibuton, aka a "foldable futon."

068 foldable futon 3 laying down
When it's fully extended, the mattress can serve as a convenient pallet or exercise mat.
SHERRIE HUGART GARCIA-RILL