What is the different between kapok and buckwheat hulls?
The kapok fiber provides a soft, firm support, and very comfortable but will loose some of its loft and compress a little with constant sitting and should be re-shaped by patting from time to time. Buckwheat hulls do not compress with use. Like sitting in sand they will mold to your shape. They do make for a heavier cushion. It is all a matter of personal preference.