Get ready for St Patrick’s Day and back your team with the official New Era Arizona Diamondbacks MLB St Patrick\'s Day Kelly Green 59FIFTY Fitted Cap. Fitted for all-day comfort and finished in Kelly Green, the design boasts mesh panels and a flat visor. The team logo features front and centre, with the MLB Batterman at the rear. Kelly Green crown with team logo to front Full, structured crown with mid and rear mesh panels Fitted design Flat visor 100% Polyester Product ID: 60227167