Tatami
Straw mat used as flooring in Japan
Tatami (畳) are soft mats used as flooring material in traditional Japanese-style rooms. They are made in standard sizes, twice as long as wide, about 0.9 by 1.8 metres (3 by 6 ft), depending on the region. In martial arts, tatami are used for training in a dojo and for competition.
From Wikipedia, under CC BY-SA. More on occurri.