PLSTD01 Features: -Includes a machine washable pillow cover with nylon zipper.. -Pillow. -Contoured ergonomically support the natural alignment of neck for outstanding comfort while you sleep. -Composed of hypoallergenic polyurethane foam and memory foam core layer. Product Type: -Neck Support/Cervical Support. Generic Dimensions: -Overall dimensions: 13" H x 4.25" W x 20.25" D. Dimensions: Overall Height - Top to Bottom: -20.25 Inches. Overall Width - Side to Side: -13 Inches. Overall Thickness: -4.25 Inches.