The NEW SEALED 2021 Topps Series 2 Baseball Hanger Box contains 67 cards featuring various MLB players and athletes such as Bryce Harper, Mookie Betts, and Mike Trout. These standard-sized cards are made of high-quality card stock and paper materials, with features like serial numbering, short prints, and holograms. This limited edition collectors' set includes cards from the MLB World Series, Rookie cards, and exclusive inserts, making it a must-have for any sports trading card enthusiast. Each box offers a mix of base set cards and parallel inserts, with the possibility of rare printing plates and stamped cards.