Tatami is not just traditional Japanese flooring. It is the surface that defines how space is lived. In Japanese homes, rooms are not organized around furniture but around the floor itself. Tatami shapes posture, movement, room size, and even social behavior. To understand tatami is to understand how Japanese interior space works from the ground up. Part of the Japanese Home & Interior Culture cluster. What Is Tatami? Tatami is a traditional Japanese flooring material made from woven rush (igusa) over a compressed core. But more importantly, it functions as a living surface rather than a decorative layer. In ...