This 16" x 20" photograph has been personally hand-signed by Pete Alonso with the inscription "POLAR BEAR." It has been obtained under the auspices of the Major League Baseball Authentication Program and can be verified by its numbered hologram at MLB.com. It also comes with an individual numbered, tamper-evident hologram from Fanatics Authentic. This process helps to ensure that the product purchased is authentic and eliminates any possibility of duplication or fraud. It measures 22" x 30" x 1" and comes ready to hang in any home or office.