The patented dual chamber and squared corner design keeps the filling under your head and neck where you need it. Pillow measures 20? x 14.5? x 4.5?. Pillow height is about 25-30% wool and 70-75% hulls. The Rejuvenation Pillow provides a great solution for side sleepers who need between 4? - 6? of pillow height. Most pillows don?t give you that much which is why many wake with their neck in an uncomfortable position. You end up wakening and trying to adjust the pillow. Once your head and neck are aligned and cradled in the buckwheat pillow you have a better chance at staying asleep. With the dual chamber design you get a generous foundation of moldable hulls to keep your head elevated and your neck aligned and a soft layer of wool batting on top to cushion your face and ear. Together these two fillings help you establish and maintain comfortable spinal alignment all night long. The pillow is easily adjusted: Place the pillow on your bed with the wool on top for 4? of loft. If you are broad shouldered and need more loft, rotate the pillow a quarter turn so that it sits on its side with the wool facing you. In this position the Rejuvenation Pillow also makes a great headrest to prop yourself for bedtime reading. For a softer feel and less support you can easily open the zipper and remove some of the hulls. Made with Sateen fabric of organic cotton fibers and filled with organic millet hulls and all natural wool. Product Materials: Natural Wool. Organic buckwheat hulls. Covering: Sateen fabric of organic cotton fibers. The pillow is hand made in our production studio in Albuquerque, NM. This pillow contains no flame retardants and is chemical free.