Kusakizome (Natural dyed) products are available in an ever-increasing selection thanks to their growing popularity, but initially, it was extremely difficult for Igusa products. After analyzing data for many years, Kyushu Bussan finally discovered a method for dyeing Goza (rush mat) woven by experienced craftsmen one at a time. Kusakizome Komakura are safe, peace of mind-inspiring pillows. Choose either buck- wheat husks or hollow, pipe-shaped pieces of plastic as the filling. These are designed for ultimate sleeping comfort.