The Yankee Cathedral The Stained Glass Series Custom Card featuring Don Mattingly is a standard-sized sports trading card made of card stock. This unique card showcases the New York Yankees player in a stained glass design, adding a stylish and nostalgic touch to any baseball card collection. As a fan of the New York Yankees or Don Mattingly, this card would make a great addition to any sports memorabilia collection, especially for those who appreciate the rich history and tradition of the team.