You're an enthusiastic Boston Red Sox fan and also love watching J.D. Martinez play. Now you can show off your fandom for both when you get this J.D. Martinez Boston Red Sox Alternate Official Cool Base Player jersey from Majestic. This jersey features distinctive Boston Red Sox graphics on both the front and back, just like the one J.D. Martinez wears when he's playing. The Cool Base technology built into the jersey wicks away moisture and gives you a breathable and lightweight feel so you can stay comfy.