Hot & Cold Therapeutic Gelly-Roll Pillow 15 x 21

15 x 21 * The patented Gelly-Roll Pillow combines a hollow cervical roll filled with a removable gel pack and a standard pillow * Soft thick fiber-filled head section supports head while polyester lined cervical roll provides added support to the neck * Retail packaged * Heat Therapy: For upper neck and shoulder pain place gel core in microwave for 20 seconds then reinsert into neck roll * Cold Therapy: For headaches place gel core in freezer for 1 hour then re-insert into neck roll * Fits standard pillow cases *