The 1991 Pro Set World League Inaugural Series Football Box is a sealed box containing standard-sized trading cards from the 1991 Pro Set set. This vintage collection features NFL players like Emmitt Smith, Barry Sanders, and Brett Favre, along with other notable athletes. The cards are made of card stock and are original licensed prints, with special features such as rookie cards and inserts. This set captures the excitement of the Super Bowl and is a must-have for football fans and collectors looking to add unique pieces to their collection.