Buckwheat Hull Fill
Buckwheat hulls are the classic zafu filling for good reason. They settle under your weight and hold the shape you press into them, which gives a firm, stable seat that does not bounce back or slowly sink the way foam or fibre filling can. Comfort and cushion quality are among the most praised things about this one, and people describe the firmness as just right once it is adjusted. basaho describes the hulls as hypoallergenic and says they retain their shape over time, and owner experience backs up the second claim: one owner has had hers for a few years and says it has kept its shape. The trade-offs are the ones every buckwheat cushion shares. The hulls make a soft rustle when you shift, which some people like and others notice in a silent room, and a full cushion is heavier than a foam one, at about 4.5 pounds here. They also dislike moisture, so the cushion should be kept dry and aired rather than washed.