Headwear store Hat Club has closed out the year with a small pack of limited edition baseball cap designs. Expand your stash with the Hat Club Exclusive MLB December 30 2021 59Fifty Fitted Hat Collection. Only six teams are included in this drop: the Detroit Tigers, Miami Marlins, Arizona Diamondbacks, Boston Red Sox, New York Yankees, and New York Mets. Hat Club added their touch with each hat’s distinct colorway and side patch on the right panel. Embroidered on the left panel is the New Era Flag, and at the back is the MLB Batterman logo. Available now at the Hat Club webstore.