Major League Baseball and New Era partner up for a merchandise drop in celebration of St. Patrick’s Day. Take your pick from the St. Patrick’s Day 2020 On Field 59Fifty Fitted Hat Collection. The caps for all teams are produced using a kelly green 100% polyester material. The team logo for the front design has an inner design of the same alternate logo embroidered on the right panel. On the left panel is the New Era Flag icon. A St Patricks Day inspired MLB Batterman logo at the back in white and green colors. Check out the whole hat collection here.