Zabuton 座布団 (Japanese kneel pillow)

“Zabuton” is the cotton-stuffed square cushion used for sitting on tatamis.

DESCRIPTION
“Zabuton” is the famous Japanese cushion, mainly used for sitting on tatamis. It is made from cotton and hemp, covered by thin fabric.
Originally,  it has been used as a respectful symbol of power. So it is recognized as a symbol to welcome and show respect for guests in ones house.
“Zabuton” has been introduced during the Kamakura era, and furtherly developed during Edo era. In that time, it was mainly used by actors and courtisans.
And around Taisho era, it  became widespread.

There is the manner to sit on “Zabuton”. It is ill-mannered to step on a “Zabuton”. To be exact, first kneel down on the mat, and then sit on one’s heels.
This position indicates respect and virtue.