OMI's buckwheat and woolwool pillows is a great traditional Japanese style pillow.   The OMI Buckwheat pillow has a dual-chambered pillow, the outside chamber, filled with wool, cushions both the feel and the sound associated with buckwheat pillows. The inner chamber is filled with organic buckwheat hulls. This buckwheat and wool pillow is made with a zipper, so sleepers can remove material and customize each pillow to their personal preference.