Tatami 'Tatami'
 Japan has etiquette about 'tatamiberi'. Japanese are taught not to step on the 'tatamiberi'. It is easy to tear 'tatamiberi' when stepping in the weakest part. Stepping on 'tatamiberi' fades the color on the edge of cotton and hemp in the 'tatami'. Also, family crests were embroidered on the 'tatamiberi' in old times, too. Stepping on the family crest was taboo.