Buckwheat Husks Filling: Pillow Size:8.6x17.7 inch. 100% buckwheat hull pillows. It stays cool all night, stays in place, and has a firm support for neck and shoulder pain. Maintain the curvature of the cervical spine, relieve cervical ache. Cotton Pillowcases: Fabric is skin-friendly and breathable, and a variety of colors can be selected for comfort and enjoyment. With a zipper opening design on the side of the inner bag, it's convenient for everyone to add or remove the buckwheat husk filling. Comfortable neck pillow: We recommend taking some hulls out initially, for it may be too FIRM for the first use. You shape it how you want the buckwheat hulls into just the right shape to provide support for your head and neck, especially if you sleep on your side and your back. Super Support: When use as lumbar support bolsters, support the lumbar spine to fill up the waist space, relieves pressure on the waist. When neck support, the gravity of the head and body realizes the arc-shaped and releases the cervical spine under pressure during the day One Pillow for Multi-Purpose: You can be used in the head, shoulder, neck and upper back/shoulder blade area, arm, back, knees parts or leg rests, helpful in relieving pain. BONUS: its weight feels very comforting when rest it across your stomach during a tummy-ache.