Get ready to celebrate St. Patrick's Day in New York Mets style with this 39THIRTY Flex Hat from New Era. The 39THIRTY is a premier stretch-fit style, engineered specifically to create a comfortable fit, so you can focus on cheering for your team. Embroidered St. Patrick's Day inspired graphics with raised details add a touch of festive flair, making it the perfect accessory to showcase your New York Mets pride while celebrating the holiday.