Hat Club has another exclusive release for baseball cap collectors who want some limited-edition pieces. Check out the MLB Anniversary Pack September 2021 59Fifty Fitted Hat Collection. Only four team anniversary designs are included in this drop: Atlanta Braves 30th, New York Mets 40th, San Diego Padres 40th, and Houston Astros 45th. All designs bear the commemorative patch on the right panel of the dome. The New Era Flag is embroidered on the left panel, and at the back is the MLB Batterman logo. Releasing today, September 10, 11 am PST at the Hat Club webstore. Better keep your eyes glued on the drop before stocks run out.