This also allows you to wash the inner liner by removing the hulls, because you can't get the hulls very wet or they will not dry. Some other pillows are overstuffed and do not allow the neck to rest in the proper position. Never sleep on your back on overstuffed pillows, it can cause stress on the neck. The Makura Miracle Pillow, and Rejuvenator Deluxe Pillows are adjustable. Some other pillows use semi-clean or dusty hulls resulting in potential allergy problems with buckwheat flour residue in the pillows that escape easily from the cheaper fabrics.
Unflattened hulls are a bit noisier than pre-flattened hulls.
Only a little extra hulls will ever need to be added to pillows using pre-flattened hulls, helping them to last many years even if you never add hulls. The 'feel' of the pillow will not change much at all over time. Unflattened hulls or a combination of pre-flattened and unflattened hulls may be used in our Value Priced pillows. Broken-flake hulls, bits and pieces, are used by some cheap pillow manufacturers. Junk hulls should only be used on egg farms, gardening mulch, and munitions storage, not health products.