Harrisburg Senators Hat Cap Adjustable Red Blue MiLB Baseball Stadium Give Away The product is an officially licensed Harrisburg Senators baseball cap, featuring the team's colors of red and blue. Made of 100% acrylic material, this adjustable cap is designed for men and is one size fits all. It is a great item for fans of the Washington Nationals affiliate team, the Harrisburg Senators, and is a perfect addition to any sports memorabilia or fan apparel collection. The cap is a stylish way to show support for the team and is a great way to commemorate a visit to the baseball stadium.