Filled with 100% US Grown Organic Buckwheat Hulls and 100% Natural Unbleached Cotton. * May relieve common sleeping problems such as; tension, muscle pain, stiff neck, headache and stress * Will conform and adjust perfectly to your head, neck, and spine. Will NOT collapse like foam. * The buckwheat hulls allow air to circulate throughout the pillow. Cooling it off quickly. * The Buckwheat pillow is a natural alternative to anyone with foam and feather allergies.