The product is a complete set of 12 trading cards from the 1998 Fleer Sports Illustrated Then & Now series. These cards feature legendary baseball players such as Kirby Puckett, Eddie Mathews, Cal Ripken, Jr., Willie Mays, Lou Brock, Ivan Rodriguez, Mark McGwire, Roger Clemens, Frank Robinson, Tony Gwynn, and Harmon Killebrew. Each card is an insert and showcases a player from the 1998 season, making it a valuable addition to any sports trading card collection.