A full tatami rush mat topper. These are used over the usual tatami 
floor cushions to protect the pads. It should not be walked on but 
can be used as a wall hanging or divider. Most of what you can find these days
   https://www.ebay.com/sch/i.html?_from=R40&_trksid=p2510209.m570.l1313&_nkw=japanese+rush+grass+tatami&_sacat=0
are pretty blah with no patterns and really expensive. I got this in 1968 in 
Shakribaru, near Fukuoka. Asking $100 although it is likely worth much more.