The 2025 Topps Holiday Baseball Mega Box contains 100 standard-sized baseball trading cards featuring top players like Fernando Tatís Jr., Shohei Ohtani, and Mike Trout. This exclusive set includes rookie cards and is part of the MLB World Series tournament. The box is manufactured by Topps and authenticated by Topps, with each card made of sturdy 20 Pt. card stock. This collectible item is a must-have for any baseball fan looking to add to their collection of sports trading cards.