Rep your New York Mets so well that no one will ever question your fandom, while also honoring our service members at the same time. It's easy when you grab this New Era 2021 Armed Forces Day On-Field 59FIFTY Fitted Hat. Everyone will know where you stand on game days when you rock this awesome cap. Major League Baseball will donate its licensed royalties from the sale of Armed Forces Day On-Field Authentic Collection apparel to MLB Charities to support programs for service members, veterans and military families.