Cheer your MLB team onto victory this season with the New Era San Francisco Giants Cooperstown Club 39Thirty Stretch Fit Hat. This San Francisco Giants hat is a perfect way to display your loyalty to your favorite MLB team. Whether you’re cheering from the stands or the couch, make sure you are geared up to cheer the San Francisco Giants onto a win with the New Era San Francisco Giants Cooperstown Club 39Thirty Stretch Fit Hat.