Travel Size 13 x15 x4 * Developed by a respected former Clinical Director of Physical Medicine Cedars-Sinai Medical Center Los Angeles specializing in neck and back care and posture * Recommended by physician leaders including a White House Physician and healthcare professionals for over 35 years * Anatomical design helps prevent and relieve discomfort from tension headaches neck and shoulder pain whiplash arthritic disorders of the neck and TMJ pain * The Wal-Pil-O