by Sanfung » Wed Mar 16, 2016 3:54 pm
Jason, if you don't mind me asking, then I had a question about cotton. When using cotton to fill regular pillows I find that it starts to seriously compress down over time. Synthetic fiber filling is even worse in this respect, but cotton always tamps down. Like you said, though, synthetic fill ends up building up a charge anyway, so I would say that's unusable for that reason as well, especially if you're somewhere that it's drier in winter.
Is this tamping effect, though, something that would also happen if you used cotton to fill a Zafu? I was just guessing that it's another reason that buckwheat hulls were so popular for filling.