Tatami mat without edge

The edges of the tatami are woven into the front side of the tatami without using heri.
By not using heri, the entire room looks more spacious. By alternating the direction of the grain of the tatami, the reflection of light gives the appearance of a checkerboard pattern. The weave is finer than that of ordinary tatami, giving a modern impression. There are two types of tatami: natural rush mats and washi．

Translated with DeepL