Tatami mat
What is a Tatami mat?
Tatami is a flooring material originally appeared in Japan early 16th late 15th century-ish. Tatami is traditionally made from rice straw core and woven igusa straw for outer layer. Modern day tatami is made usually from wood chip boards or polystyrene foam. Tatami mat is made with aspect ratio 2:1 in mind and it is a standard. Prior to mid 16th century Samurais and nobility used tatami or woven goza mats to sleep on. As a mater of a fact it is only in late 17 century that tatami got popularized and available for common folk.
Woven iguisa grass.
Tatami layout
How is tatami mat used in judo.
In judo, tatami is used as flooring for dojo in addition competitive matches are staged on a tatami as well.
Dojo floored with tatami at Kodokan 7th floor
Judo tatami is a fighting area where two judokas present their skills. The minimum allowed size is 14 x 14 meters. the matches are fought on minimum 8 X 8 meters and maximum 10 x 10 meters and minimum of 3 meters of surrounding safety zone padded with tatami.
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