The 2021 Topps Baseball Series 1 Hanger Box contains 67 cards featuring players from Major League Baseball (MLB) teams such as the New York Yankees, Los Angeles Dodgers, and Los Angeles Angels. Manufactured by Topps, this sports trading card set offers collectors a variety of cards from the 2021 season. Each box is sealed, ensuring the authenticity and freshness of the cards inside, making it a sought-after item for baseball fans and collectors alike.