Cheer your MLB team onto victory this season with the New Era Toddler Kids' St. Louis Cardinals Graded 39THIRTY Fitted Hat. This St. Louis Cardinals 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 St. Louis Cardinals onto a win with the New Era Toddler Kids' St. Louis Cardinals Graded 39THIRTY Fitted Hat.