The 2011 Topps Opening Day Factory Sealed Box contains 252 standard-sized baseball trading cards featuring players like Freddie Freeman from the Atlanta Braves and Los Angeles Dodgers. Manufactured by Topps in 2011, this set is perfect for collectors looking to add rookie cards and other sports trading cards to their collection. With cards from the MLB league and a variety of players and teams represented, this sealed box offers a fun and exciting way to dive into the world of baseball card collecting.