This Authentic Collection Diamond Tech 59FIFTY Batting Practice cap is worn by all all MLB players throughout Spring Training and all in-season pre-game workouts. Designed with an embroidered team logo on front and stitched MLB logo on the rear. Performance is enhanced through NE TECH featuring COOLERA and SOLARERA. COOLERA moisture management system wicks away sweat while SOLARERA offers UPF50 protection from intense sunlight.