The Topps 1989 Major League Leaders Super Glossy Baseball Sealed Cards 3 Packs consist of standard-sized baseball trading cards from the 1989 season. These vintage cards feature players from the Major League Baseball (MLB) and are made of card stock materials. Each pack contains one set of cards from the 1989 Topps collection, manufactured by Topps in the United States. These sealed packs offer collectors a chance to obtain autographed cards from MLB World Series players, making them a desirable item for sports trading card enthusiasts.