The product is a collection of US First Day Covers and Special Covers from the Postal Commemorative Society, issued between 2006-2007. These covers feature a variety of topics related to American history, including sports, inventions, and landmarks. Each cover is canceled with the First Day of Issue stamp, and they are in a used quality with multi-color designs. These collectible items offer a unique glimpse into the historical events and cultural significance of the United States during the specified time period.