What is a Japanese mat?

Japanese tatami mats are a type of flooring that is typically used in Japanese homes decorated in a traditional style. Tatami mats feature a core that is made out of rice straw surrounded by a covering of woven rush straw.

During the Heian period in Japan, tatami mats were used as seating for aristocrats and the highest ranks of nobility. Any room that was completely covered by tatami was referred to as "zashiki." By the end of the 17th century, tatami mats became popular among commoners. The size of tatami mats varies depending on the region, and it typically ranges between 0.88 and 1.91 meters.