This rush, which has always been cultivated in Japan, is the traditional material used to make the tatami, the mats that for centuries cover the walls and the floors of Japanese houses. This material has the ability to filter and purify the air, retaining harmful substances existing in the environment, and to absorb and release moisture, creating a constant microclimate. With a good fire resistance and an excellent resistance to stains, it is used to produce the seating areas of the Shibusa lounge chair and chaise longue.