The product is a 1991 Donruss Factory Sealed Hobby Dealer Complete Set of 784 baseball cards featuring players like Kent Hrbek, Cal Ripken, Jr., and Willie Stargell. The cards are standard size, made of card stock, and are part of the MLB World Series event/tournament. This original set from the United States includes players from the New York Yankees and other notable teams, making it a valuable collection for baseball fans and collectors. The set also includes unopened cello packs and a puzzle feature, adding to the excitement of unboxing the cards.