Japanese Floor Mattress Futon Mattress, Thicken Tatami Mat Sleeping Pad Foldable Roll Up Mattress Boys Girls Dormitory Mattress Pad Kids Floor with Washable Cover, Black Full-XL. WIDE RANGE of USES – Floor mattress can be used as a futon in the bedroom, a yoga mat, a pet bed, a tatami mat, a kids’ play mat, a sleeping floor mat, a tent mat, a living room futon, or a guest mattress.