Buckwheat is actually a member of the rhubarb family; it is not related to ‘wheat’ at all, so there is no worry of wheat allergens.
For that matter, the inorganic hulls are so inhospitable, they repel mites and bed bugs! The hull is C-shaped, allowing air to flow through, which keeps the pillow cool while you sleep.
Other pillows contain harmful ingredients such as petroleum, formaldehyde, U.V. inhibitors, anti-fungals, plasticizers, etc. The Cumberland Perfect Sleep Buckwheat Hull Pillow is 100% chemical-free!