The 2026 Topps Series 1 Baseball Celebration Mega Box is a brand new sealed box containing 196 baseball trading cards featuring top players like Juan Soto, Ken Griffey Jr, Shohei Ohtani, and Mike Trout. These standard-sized cards are made of card stock and are from the Major League (MLB). The box includes cards from the 2026 Topps Series 1 Baseball set and is a special edition celebrating the MLB World Series. This collectible item is a must-have for any baseball fan or trading card enthusiast looking to add to their collection.