The product is a 1991 Upper Deck High Series Baseball Factory Sealed Hobby Box containing 540 standard-sized trading cards featuring players such as Ken Griffey Jr, Hank Aaron, and Nolan Ryan. This collectors' edition set includes cards from the Major League Baseball World Series, manufactured by Upper Deck in the United States. The box is a sought-after item for baseball sports trading card enthusiasts looking to add to their collection from iconic teams like the New York Yankees and Chicago White Sox.