The St. Louis Cardinals and Chicago Cubs are traveling to London to be the first teams since 2019 to play in the United Kingdom. Commemorate this historic two-game series by putting on this 2023 MLB World Tour: London Series Flag Fill 9FORTY adjustable cap. This cool New Era hat features the instantly recognizable St. Louis Cardinals logo filled in with the Union Jack. An embroidered wordmark on the right side and a regal patch on the back complete this hat's look.