Japanese Floor Mattress, 3.5″ Thick Futon Mattress, 100% High Density Comfortable Foam, Foldable Tatami Mat with Storage Bag, Sleeping Pad for Camping Dormitory Yoga. Fits Any Space: This versatile futon mattress works as a bedroom floor mattress, living room tatami, guest bed, yoga mat, kids’ play mat, pet mat, or camping mat.