The 2013 Topps Opening Day Baseball Sealed Box contains 11 packs of standard-sized baseball trading cards featuring players from Major League Baseball (MLB). Each pack includes cards made of card stock, with a focus on the 2013 season and MLB World Series. Manufactured by Topps, these cards are part of the base set and may include rookie cards. The sealed box offers collectors the opportunity to acquire cards in English language, authenticated by Topps. A great addition for baseball card enthusiasts looking to expand their collection with cards from the 2013 season.