Specially Designed Sleeping Pillow Uses Convoluted Foam Shaped To Support The Neck And Promote Airflow * Special Wedges Inserted Into Each Edge To Provide Cervical Support Regardless Of Which Side You Use * 22 X 19 * Poly/cotton Blend Cover Included * This Pillow Does Not Compare To The Wal-pil-o * The Wal-pil-o Is A 4-in-1 Pillow That Has Been Clinically Proven To Help Reduce Pain *