MLB brings out its part in New Era’s 59Fifty Day on May 9 with a set of baseball cap designs. Top your outfit with a piece from the MLB 59Fifty Day 2023 59Fifty Fitted Hat Collection. A total of 22 Major League Baseball teams are available, all with black leather for the dome and uppervisor. The front design is made extra special with its Cooperstown team logo embroidery. The right panel features The Caps the Pros Wear patch. On the left panel is the New Era Flag. The undervisor is in green to add that vintage vibe to the hat design. Click here to view the whole collection.