This shadow box comes with 8 autographed baseballs personally hand-signed by the World Series Champion Boston Red Sox: Andrew Benintendi, Mookie Betts, Xander Bogaerts, Jackie Bradley Jr., Rafael Devers, Craig Kimbrel, Steve Pearce and Eduardo Nunez. This piece also comes with a photograph of each player, the 2018 post season results inside a black frame. This product is officially licensed and authenticated by MLB. The baseballs has been obtained under the auspices of the MLB Authentication Program and can be verified by its numbered hologram at MLB.com. They 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. The inner dimensions are 30" x 38".