The 2025 Topps Series One MLB Celebration Mega Box is a factory-sealed box containing 224 standard-sized baseball trading cards from the 2025 Topps Series 1 set. This limited edition box features exclusive inserts of players like Shohei Ohtani and Aaron Judge, representing the United States MLB teams. Each card is made of card stock and comes with autograph authentication from Topps. Perfect for collectors and fans of Major League Baseball, this set commemorates the MLB World Series in English language, manufactured by Topps in the United States.