An Age-Old Solution for a More Comfortable Sleep Forget synthetic pillows. We've found a natural, better solution that's hypoallergenic, too. The tiny buckwheat hulls inside naturally contour to your head and neck giving you stable support. They won't go flat either, thanks to their pyramid-like shape causing them to interlock rather than compress. You can even adjust the firmness - unzip covering and remove some hulls for a softer pillow. No worries of heat build-up, unlike synthetic fillings (lets your head stay at a constant temperature all night). Hulls come from USA-grown buckwheat, and pillows are handmade in USA, too!. Includes a white cotton pillowcase. 14" x 21". White. Locally made! We're always on the hunt for quality goods made in our area, and these pillows are just that! Each pillow is made by hand by a small business that uses only quality materials, like USA-grown buckwheat hulls. Their pillows have even been praised by chiropractors.