Filled with premium buckwheat hulls for superior neck and shoulder support. Adjustable Loft: Customize the pillow's loft to your liking by adding or removing buckwheat hulls through the convenient zippered opening. Natural breathability of buckwheat hulls ensures comfortable temperature regulation year-round. Soft and durable white cover is easy to remove and machine-washable. Alleviates tension, discomfort, and promotes restorative sleep.